<link:linkbase
    xmlns:link="http://www.xbrl.org/2003/linkbase"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
    >

   <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower" arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"/>
   <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
   <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member"/>
   <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension"/>
   <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_1" roleURI="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_91" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_87" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_18" roleURI="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_124" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_115" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_66" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_67" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_125" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_62" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_161" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_45" roleURI="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_60" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_58" roleURI="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_22" roleURI="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110"/>
   <link:roleRef xlink:type="simple" xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#id_12" roleURI="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000"/>
   <link:roleRef xlink:type="simple" xlink:href="https://www.esma.europa.eu/taxonomy/2022-03-24/esef_cor.xsd#esef_role-999999" roleURI="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999"/>
   <!-- http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue" xlink:label="ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost" xlink:label="ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue" xlink:label="ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities" xlink:label="ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInInsuranceReinsuranceContracts" xlink:label="ext_CashFlowsFromUsedInInsuranceReinsuranceContracts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_CashFlowsFromUsedInInsuranceReinsuranceContracts"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_LiquidityGeneratedAbsorbedByOtherAssets" xlink:label="ext_LiquidityGeneratedAbsorbedByOtherAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_LiquidityGeneratedAbsorbedByOtherAssets"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets" xlink:label="ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities" xlink:label="ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                          xlink:to="ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities"
                            order="13"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdministrativeExpense" xlink:label="ifrs-full_AdministrativeExpense" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdministrativeExpenseStaffCosts" xlink:label="ext_AdministrativeExpenseStaffCosts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_AdministrativeExpense"
                          xlink:to="ext_AdministrativeExpenseStaffCosts"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherAdministrativeExpense" xlink:label="ext_OtherAdministrativeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_AdministrativeExpense"
                          xlink:to="ext_OtherAdministrativeExpense"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:label="ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceAssets" xlink:label="ext_InsuranceAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ext_InsuranceAssets"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TangibleAssets" xlink:label="ext_TangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ext_TangibleAssets"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxAssets" xlink:label="ext_TaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ext_TaxAssets"
                            order="4"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:label="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss" xlink:label="ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities"
                          xlink:to="ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss" xlink:label="ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities"
                          xlink:to="ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:label="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill" xlink:label="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets" xlink:label="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost" xlink:label="ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossArisingFromRepurchaseOfFinancialLiabilities" xlink:label="ext_GainLossArisingFromRepurchaseOfFinancialLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainLossArisingFromRepurchaseOfFinancialLiabilities"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesFromContractualChangesWithoutDerecognition" xlink:label="ext_GainsLossesFromContractualChangesWithoutDerecognition" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainsLossesFromContractualChangesWithoutDerecognition"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities" xlink:label="ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss" xlink:label="ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss" xlink:label="ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue" xlink:label="ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GoodwillImpairment" xlink:label="ext_GoodwillImpairment" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GoodwillImpairment"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GrossIncome" xlink:label="ext_GrossIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_GrossIncome"
                            order="13"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterestExpenseAndSimilarCharges" xlink:label="ext_InterestExpenseAndSimilarCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_InterestExpenseAndSimilarCharges"
                            order="14"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterestIncomeAndSimilarRevenues" xlink:label="ext_InterestIncomeAndSimilarRevenues" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_InterestIncomeAndSimilarRevenues"
                            order="15"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetGainsLossesFromHedgeAccounting" xlink:label="ext_NetGainsLossesFromHedgeAccounting" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetGainsLossesFromHedgeAccounting"
                            order="16"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss" xlink:label="ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss"
                            order="17"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetInterestMargin" xlink:label="ext_NetInterestMargin" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetInterestMargin"
                            order="18"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProfitFromFinancialActivities" xlink:label="ext_NetProfitFromFinancialActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetProfitFromFinancialActivities"
                            order="19"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndCharges" xlink:label="ext_NetProvisionsForRisksAndCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetProvisionsForRisksAndCharges"
                            order="20"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven" xlink:label="ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven"
                            order="21"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndChargesOtherNetProvision" xlink:label="ext_NetProvisionsForRisksAndChargesOtherNetProvision" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_NetProvisionsForRisksAndChargesOtherNetProvision"
                            order="22"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OperatingCosts" xlink:label="ext_OperatingCosts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_OperatingCosts"
                            order="23"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:label="ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ProfitLossBeforeTax"
                          xlink:to="ext_ProfitLossFromFinancialAndInsuranceActivities"
                            order="24"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowHedging" xlink:label="ext_CashFlowHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_CashFlowHedging"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ForeignExchangeDifferences" xlink:label="ext_ForeignExchangeDifferences" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_ForeignExchangeDifferences"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ForeignInvestmentsHedging" xlink:label="ext_ForeignInvestmentsHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_ForeignInvestmentsHedging"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" xlink:label="ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss" xlink:label="ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss"
                            order="6"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromInvestingActivities" xlink:label="ext_CashFlowsFromInvestingActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromInvestingActivities"
                          xlink:to="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsReceivedClassifiedAsInvestingActivities" xlink:label="ifrs-full_DividendsReceivedClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromInvestingActivities"
                          xlink:to="ifrs-full_DividendsReceivedClassifiedAsInvestingActivities"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromInvestingActivities"
                          xlink:to="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:label="ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromInvestingActivities"
                          xlink:to="ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"
                            order="4"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromInvestingActivities" xlink:label="ext_CashFlowsFromInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities"
                          xlink:to="ext_CashFlowsFromInvestingActivities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsUsedInInvestingActivities" xlink:label="ext_CashFlowsUsedInInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities"
                          xlink:to="ext_CashFlowsUsedInInvestingActivities"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities" xlink:label="ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities"
                          xlink:to="ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities" xlink:label="ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInInvestingActivities"
                          xlink:to="ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities"
                            order="4"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities"
                          xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities"
                          xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsUsedInInvestingActivities" xlink:label="ext_CashFlowsUsedInInvestingActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsUsedInInvestingActivities"
                          xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsUsedInInvestingActivities"
                          xlink:to="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:label="ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_CashFlowsUsedInInvestingActivities"
                          xlink:to="ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations" xlink:label="ifrs-full_CashFlowsFromUsedInOperations" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded" xlink:label="ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperations"
                          xlink:to="ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations" xlink:label="ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperations"
                          xlink:to="ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax" xlink:label="ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInOperations"
                          xlink:to="ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParent" xlink:label="ifrs-full_EquityAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_EquityInstruments" xlink:label="ext_EquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ext_EquityInstruments"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherReservesOther" xlink:label="ext_OtherReservesOther" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ext_OtherReservesOther"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_RedeemableShares" xlink:label="ext_RedeemableShares" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ext_RedeemableShares"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalProfitLossAttributableToOwnersOfParent" xlink:label="ext_TotalProfitLossAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ext_TotalProfitLossAttributableToOwnersOfParent"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ValuationReserves" xlink:label="ext_ValuationReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ext_ValuationReserves"
                            order="5"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceServiceResult" xlink:label="ifrs-full_InsuranceServiceResult" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ExpensesFromReinsuranceContractsHeld" xlink:label="ext_ExpensesFromReinsuranceContractsHeld" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_InsuranceServiceResult"
                          xlink:to="ext_ExpensesFromReinsuranceContractsHeld"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncomeFromReinsuranceContractsHeld" xlink:label="ext_IncomeFromReinsuranceContractsHeld" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_InsuranceServiceResult"
                          xlink:to="ext_IncomeFromReinsuranceContractsHeld"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaid" xlink:label="ifrs-full_DividendsPaid" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ExtraordinaryDividendsDistribution" xlink:label="ext_ExtraordinaryDividendsDistribution" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_DividendsPaid"
                          xlink:to="ext_ExtraordinaryDividendsDistribution"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterimDividends" xlink:label="ext_InterimDividends" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_DividendsPaid"
                          xlink:to="ext_InterimDividends"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GrossIncome" xlink:label="ext_GrossIncome" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RevenueFromDividends" xlink:label="ifrs-full_RevenueFromDividends" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_GrossIncome"
                          xlink:to="ifrs-full_RevenueFromDividends"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradingIncomeExpense" xlink:label="ifrs-full_TradingIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_GrossIncome"
                          xlink:to="ifrs-full_TradingIncomeExpense"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FeeAndCommissionIncomeExpense" xlink:label="ifrs-full_FeeAndCommissionIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_GrossIncome"
                          xlink:to="ifrs-full_FeeAndCommissionIncomeExpense"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:label="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost" xlink:label="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9"
                          xlink:to="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9"
                          xlink:to="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:label="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseDueToEquityInstruments" xlink:label="ext_IncreaseDecreaseDueToEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity"
                          xlink:to="ext_IncreaseDecreaseDueToEquityInstruments"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseOfReserves" xlink:label="ext_IncreaseDecreaseOfReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity"
                          xlink:to="ext_IncreaseDecreaseOfReserves"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseThroughTreasuryShareDerivatives" xlink:label="ext_IncreaseDecreaseThroughTreasuryShareDerivatives" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity"
                          xlink:to="ext_IncreaseDecreaseThroughTreasuryShareDerivatives"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PreviousYearProfitLossAllocationReserves" xlink:label="ext_PreviousYearProfitLossAllocationReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_IncreaseDecreaseThroughTransfersAndOtherChangesEquity"
                          xlink:to="ext_PreviousYearProfitLossAllocationReserves"
                            order="4"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceAssets" xlink:label="ext_InsuranceAssets" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsIssuedThatAreAssets" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_InsuranceAssets"
                          xlink:to="ifrs-full_InsuranceContractsIssuedThatAreAssets"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReinsuranceContractsHeldThatAreAssets" xlink:label="ifrs-full_ReinsuranceContractsHeldThatAreAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_InsuranceAssets"
                          xlink:to="ifrs-full_ReinsuranceContractsHeldThatAreAssets"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceLiabilities" xlink:label="ext_InsuranceLiabilities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsIssuedThatAreLiabilities" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_InsuranceLiabilities"
                          xlink:to="ifrs-full_InsuranceContractsIssuedThatAreLiabilities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReinsuranceContractsHeldThatAreLiabilities" xlink:label="ifrs-full_ReinsuranceContractsHeldThatAreLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_InsuranceLiabilities"
                          xlink:to="ifrs-full_ReinsuranceContractsHeldThatAreLiabilities"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceLiabilities" xlink:label="ext_InsuranceLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_EquityAndLiabilities"
                          xlink:to="ext_InsuranceLiabilities"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Liabilities" xlink:label="ifrs-full_Liabilities" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:label="ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Liabilities"
                          xlink:to="ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProvisionForEmployeeSeverancesPay" xlink:label="ext_ProvisionForEmployeeSeverancesPay" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Liabilities"
                          xlink:to="ext_ProvisionForEmployeeSeverancesPay"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxLiabilities" xlink:label="ext_TaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Liabilities"
                          xlink:to="ext_TaxLiabilities"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProfitFromFinancialActivities" xlink:label="ext_NetProfitFromFinancialActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:label="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_NetProfitFromFinancialActivities"
                          xlink:to="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IntangibleAssetsAndGoodwill" xlink:label="ifrs-full_IntangibleAssetsAndGoodwill" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OfWhichGoodwill" xlink:label="ext_OfWhichGoodwill" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_IntangibleAssetsAndGoodwill"
                          xlink:to="ext_OfWhichGoodwill"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OperatingCosts" xlink:label="ext_OperatingCosts" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherOperatingIncomeExpense" xlink:label="ifrs-full_OtherOperatingIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_OperatingCosts"
                          xlink:to="ifrs-full_OtherOperatingIncomeExpense"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdministrativeExpense" xlink:label="ifrs-full_AdministrativeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_OperatingCosts"
                          xlink:to="ifrs-full_AdministrativeExpense"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments" xlink:label="ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities"
                          xlink:to="ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares" xlink:label="ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities"
                          xlink:to="ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl" xlink:label="ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_CashFlowsFromUsedInFinancingActivities"
                          xlink:to="ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Provisions" xlink:label="ifrs-full_Provisions" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherProvisionsForRiskAndCharges" xlink:label="ext_OtherProvisionsForRiskAndCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Provisions"
                          xlink:to="ext_OtherProvisionsForRiskAndCharges"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PostRetirementBenefitObligation" xlink:label="ext_PostRetirementBenefitObligation" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Provisions"
                          xlink:to="ext_PostRetirementBenefitObligation"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProvisionForCommittmentsAndGuaranteesGiven" xlink:label="ext_ProvisionForCommittmentsAndGuaranteesGiven" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Provisions"
                          xlink:to="ext_ProvisionForCommittmentsAndGuaranteesGiven"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:label="ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NetEarnedPremium" xlink:label="ifrs-full_NetEarnedPremium" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_ProfitLossFromFinancialAndInsuranceActivities"
                          xlink:to="ifrs-full_NetEarnedPremium"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceServiceResult" xlink:label="ifrs-full_InsuranceServiceResult" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_ProfitLossFromFinancialAndInsuranceActivities"
                          xlink:to="ifrs-full_InsuranceServiceResult"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxAssets" xlink:label="ext_TaxAssets" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssets" xlink:label="ifrs-full_CurrentTaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_TaxAssets"
                          xlink:to="ifrs-full_CurrentTaxAssets"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_TaxAssets"
                          xlink:to="ifrs-full_DeferredTaxAssets"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxLiabilities" xlink:label="ext_TaxLiabilities" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxLiabilities" xlink:label="ifrs-full_CurrentTaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_TaxLiabilities"
                          xlink:to="ifrs-full_CurrentTaxLiabilities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ext_TaxLiabilities"
                          xlink:to="ifrs-full_DeferredTaxLiabilities"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/esef/2025-06-30/roles/Anchoring" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" xlink:label="ifrs-full_Equity" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalEquity" xlink:label="ext_TotalEquity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Equity"
                          xlink:to="ext_TotalEquity"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalEquityAttributableToOwnersOfParent" xlink:label="ext_TotalEquityAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Equity"
                          xlink:to="ext_TotalEquityAttributableToOwnersOfParent"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalNonControllingInterests" xlink:label="ext_TotalNonControllingInterests" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower"
                          xlink:from="ifrs-full_Equity"
                          xlink:to="ext_TotalNonControllingInterests"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract"
                          xlink:to="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract"
                          xlink:to="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract"
                          xlink:to="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract"
                          xlink:to="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsAbstract"
                          xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesAbstract" xlink:label="ifrs-full_DisclosureOfJointVenturesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesTable" xlink:label="ifrs-full_DisclosureOfJointVenturesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfJointVenturesAbstract"
                          xlink:to="ifrs-full_DisclosureOfJointVenturesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsAbstract"
                          xlink:to="ifrs-full_DisclosureOfOperatingSegmentsTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract"
                          xlink:to="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract"
                          xlink:to="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/all https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/all"
                          xlink:from="ifrs-full_StatementOfChangesInEquityAbstract"
                          xlink:to="ifrs-full_StatementOfChangesInEquityTable"
                            xbrldt:contextElement="scenario"
                            xbrldt:closed="true"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAbstract"
                          xlink:to="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss" xlink:label="ifrs-full_ProfitLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesLineItems"
                          xlink:to="ifrs-full_ProfitLoss"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceRevenue" xlink:label="ifrs-full_InsuranceRevenue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueLineItems"
                          xlink:to="ifrs-full_InsuranceRevenue"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxChangeInFairValueOfFinancialLiabilityAttributableToChangeInCreditRiskOfLiability"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillNotBeReclassifiedToProfitOrLoss" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillNotBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillNotBeReclassifiedToProfitOrLoss"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLoss" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxInsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedExcludedFromProfitOrLossThatWillBeReclassifiedToProfitOrLoss"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLoss" xlink:label="ifrs-full_OtherComprehensiveIncomeNetOfTaxFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeNetOfTaxFinanceIncomeExpensesFromReinsuranceContractsHeldExcludedFromProfitOrLoss"
                            order="7"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsAbstract"
                          xlink:to="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterestIncomeAndSimilarRevenues" xlink:label="ext_InterestIncomeAndSimilarRevenues" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_InterestIncomeAndSimilarRevenues"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterestExpenseAndSimilarCharges" xlink:label="ext_InterestExpenseAndSimilarCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_InterestExpenseAndSimilarCharges"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetInterestMargin" xlink:label="ext_NetInterestMargin" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_NetInterestMargin"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetGainsLossesFromHedgeAccounting" xlink:label="ext_NetGainsLossesFromHedgeAccounting" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_NetGainsLossesFromHedgeAccounting"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossArisingFromRepurchaseOfFinancialLiabilities" xlink:label="ext_GainLossArisingFromRepurchaseOfFinancialLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_GainLossArisingFromRepurchaseOfFinancialLiabilities"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss" xlink:label="ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_NetGainsLossesOnOtherFinancialAssetsLiabilitiesAtFairValueThroughProfitOrLoss"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss" xlink:label="ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_GainsLossesOnFinancialAssetsLiabilitiesDesignatedAtFairValueThroughProfitOrLoss"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProfitFromFinancialActivities" xlink:label="ext_NetProfitFromFinancialActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_NetProfitFromFinancialActivities"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndChargesOtherNetProvision" xlink:label="ext_NetProvisionsForRisksAndChargesOtherNetProvision" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_NetProvisionsForRisksAndChargesOtherNetProvision"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill" xlink:label="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossIntangibleAssetsOtherThanGoodwill"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue" xlink:label="ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_GainsLossesOnTangibleAndIntangibleAssetsOtherThanGoodwillMeasuredAtFairValue"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GoodwillImpairment" xlink:label="ext_GoodwillImpairment" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ext_GoodwillImpairment"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax" xlink:label="ifrs-full_ProfitLossBeforeTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ifrs-full_ProfitLossBeforeTax"
                            order="13"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromDiscontinuedOperations" xlink:label="ifrs-full_ProfitLossFromDiscontinuedOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsLineItems"
                          xlink:to="ifrs-full_ProfitLossFromDiscontinuedOperations"
                            order="14"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesAbstract"
                          xlink:to="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:label="ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesLineItems"
                          xlink:to="ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsAbstract"
                          xlink:to="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:label="ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems"
                          xlink:to="ext_AssetsFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxAssets" xlink:label="ext_TaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems"
                          xlink:to="ext_TaxAssets"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets" xlink:label="ifrs-full_Assets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems"
                          xlink:to="ifrs-full_Assets"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesAbstract"
                          xlink:to="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TaxLiabilities" xlink:label="ext_TaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesLineItems"
                          xlink:to="ext_TaxLiabilities"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsAbstract"
                          xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognisingDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognisingDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsLineItems"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRecognisingDifferenceBetweenFairValueAtInitialRecognitionAndAmountDeterminedUsingValuationTechniqueExplanatory"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesAbstract" xlink:label="ifrs-full_DisclosureOfJointVenturesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesLineItems" xlink:label="ifrs-full_DisclosureOfJointVenturesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfJointVenturesAbstract"
                          xlink:to="ifrs-full_DisclosureOfJointVenturesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesLineItems" xlink:label="ifrs-full_DisclosureOfJointVenturesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="ifrs-full_CashAndCashEquivalents" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfJointVenturesLineItems"
                          xlink:to="ifrs-full_CashAndCashEquivalents"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsAbstract"
                          xlink:to="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                          xlink:to="ifrs-full_CashFlowsFromUsedInOperatingActivities"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsUsedInInvestingActivities" xlink:label="ext_CashFlowsUsedInInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                          xlink:to="ext_CashFlowsUsedInInvestingActivities"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                          xlink:to="ifrs-full_CashFlowsFromUsedInInvestingActivities"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl" xlink:label="ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                          xlink:to="ext_OtherInflowsOutflowsFromSalePurchaseOfMinorityControl"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:label="ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsLineItems"
                          xlink:to="ifrs-full_CashFlowsFromUsedInFinancingActivities"
                            order="5"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillAbstract"
                          xlink:to="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IntangibleAssetsAndGoodwill" xlink:label="ifrs-full_IntangibleAssetsAndGoodwill" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems"
                          xlink:to="ifrs-full_IntangibleAssetsAndGoodwill"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OfWhichGoodwill" xlink:label="ext_OfWhichGoodwill" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillLineItems"
                          xlink:to="ext_OfWhichGoodwill"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesAbstract"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems"
                          xlink:to="ifrs-full_InvestmentAccountedForUsingEquityMethod"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromContinuingOperations" xlink:label="ifrs-full_ProfitLossFromContinuingOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems"
                          xlink:to="ifrs-full_ProfitLossFromContinuingOperations"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncome" xlink:label="ifrs-full_OtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems"
                          xlink:to="ifrs-full_OtherComprehensiveIncome"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesLineItems"
                          xlink:to="ifrs-full_ComprehensiveIncome"
                            order="4"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncontrollingInterests" xlink:label="ifrs-full_NoncontrollingInterests" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"
                          xlink:to="ifrs-full_NoncontrollingInterests"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ProfitLossAttributableToNoncontrollingInterests" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"
                          xlink:to="ifrs-full_ProfitLossAttributableToNoncontrollingInterests"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract"
                          xlink:to="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems"
                          xlink:to="ifrs-full_DeferredTaxAssets"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems"
                          xlink:to="ifrs-full_DeferredTaxLiabilities"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityAbstract" xlink:label="ifrs-full_StatementOfChangesInEquityAbstract" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityAbstract"
                          xlink:to="ifrs-full_StatementOfChangesInEquityLineItems"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityLineItems" xlink:label="ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="locator"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalEquity" xlink:label="ext_TotalEquity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_TotalEquity"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PreviousYearProfitLossAllocationReserves" xlink:label="ext_PreviousYearProfitLossAllocationReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_PreviousYearProfitLossAllocationReserves"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaid" xlink:label="ifrs-full_DividendsPaid" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_DividendsPaid"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseOfReserves" xlink:label="ext_IncreaseDecreaseOfReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_IncreaseDecreaseOfReserves"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssueOfEquity" xlink:label="ifrs-full_IssueOfEquity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_IssueOfEquity"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_IncreaseDecreaseThroughTreasuryShareTransactions"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InterimDividends" xlink:label="ext_InterimDividends" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_InterimDividends"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ExtraordinaryDividendsDistribution" xlink:label="ext_ExtraordinaryDividendsDistribution" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_ExtraordinaryDividendsDistribution"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseDueToEquityInstruments" xlink:label="ext_IncreaseDecreaseDueToEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_IncreaseDecreaseDueToEquityInstruments"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncreaseDecreaseThroughTreasuryShareDerivatives" xlink:label="ext_IncreaseDecreaseThroughTreasuryShareDerivatives" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_IncreaseDecreaseThroughTreasuryShareDerivatives"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:label="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_IncreaseDecreaseThroughSharebasedPaymentTransactions"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" xlink:label="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome" xlink:label="ifrs-full_ComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ifrs-full_ComprehensiveIncome"
                            order="13"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalEquityAttributableToOwnersOfParent" xlink:label="ext_TotalEquityAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_TotalEquityAttributableToOwnersOfParent"
                            order="14"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalNonControllingInterests" xlink:label="ext_TotalNonControllingInterests" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_StatementOfChangesInEquityLineItems"
                          xlink:to="ext_TotalNonControllingInterests"
                            order="15"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityMember" xlink:label="ifrs-full_EquityMember" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:label="ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ifrs-full_EquityAttributableToOwnersOfParentMember"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncontrollingInterestsMember" xlink:label="ifrs-full_NoncontrollingInterestsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ifrs-full_NoncontrollingInterestsMember"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AltreRiserveMember" xlink:label="ext_AltreRiserveMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_AltreRiserveMember"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AzioniProprieMember" xlink:label="ext_AzioniProprieMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_AzioniProprieMember"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_Capital" xlink:label="ext_Capital" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_Capital"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CapitaleAltreAzioniMember" xlink:label="ext_CapitaleAltreAzioniMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_CapitaleAltreAzioniMember"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CapitaleAzioniOrdinarieMember" xlink:label="ext_CapitaleAzioniOrdinarieMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_CapitaleAzioniOrdinarieMember"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_EquityInstrumentsMember" xlink:label="ext_EquityInstrumentsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_EquityInstrumentsMember"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_Interim_dividends" xlink:label="ext_Interim_dividends" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_Interim_dividends"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_Reserves" xlink:label="ext_Reserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_Reserves"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_RiserveDaUtiliMember" xlink:label="ext_RiserveDaUtiliMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_RiserveDaUtiliMember"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_SovrapprezziDiEmissioneMember" xlink:label="ext_SovrapprezziDiEmissioneMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_SovrapprezziDiEmissioneMember"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_UtilePerditaDiEsercizioMember" xlink:label="ext_UtilePerditaDiEsercizioMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_UtilePerditaDiEsercizioMember"
                            order="13"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ValuationReservesMember" xlink:label="ext_ValuationReservesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_EquityMember"
                          xlink:to="ext_ValuationReservesMember"
                            order="14"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RestatedMember" xlink:label="ifrs-full_RestatedMember" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PreviouslyStatedMember" xlink:label="ifrs-full_PreviouslyStatedMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_RestatedMember"
                          xlink:to="ifrs-full_PreviouslyStatedMember"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PreviouslyStatedT2" xlink:label="ext_PreviouslyStatedT2" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="ifrs-full_RestatedMember"
                          xlink:to="ext_PreviouslyStatedT2"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/domain-member https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999 -->
   <link:definitionLink xlink:role="https://www.esma.europa.eu/xbrl/role/cor/esef_role-999999" xlink:type="extended">
      <link:loc xlink:href="https://www.esma.europa.eu/taxonomy/2022-03-24/esef_cor.xsd#esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:label="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:label="ifrs-full_AddressOfRegisteredOfficeOfEntity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_AddressOfRegisteredOfficeOfEntity"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading" xlink:label="ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_AdjustmentsForDecreaseIncreaseInFinancialAssetsHeldForTrading"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading" xlink:label="ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesHeldForTrading"
                            order="3"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdministrativeExpense" xlink:label="ifrs-full_AdministrativeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_AdministrativeExpense"
                            order="4"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"
                            order="5"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations" xlink:label="ifrs-full_CashFlowsFromUsedInOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CashFlowsFromUsedInOperations"
                            order="6"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:label="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"
                            order="7"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"
                            order="8"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:label="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"
                            order="9"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CountryOfIncorporation" xlink:label="ifrs-full_CountryOfIncorporation" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CountryOfIncorporation"
                            order="10"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssets" xlink:label="ifrs-full_CurrentTaxAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CurrentTaxAssets"
                            order="11"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxLiabilities" xlink:label="ifrs-full_CurrentTaxLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_CurrentTaxLiabilities"
                            order="12"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DebtSecurities" xlink:label="ifrs-full_DebtSecurities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DebtSecurities"
                            order="13"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepositsFromBanks" xlink:label="ifrs-full_DepositsFromBanks" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DepositsFromBanks"
                            order="14"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepositsFromCustomers" xlink:label="ifrs-full_DepositsFromCustomers" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DepositsFromCustomers"
                            order="15"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DerivativeFinancialAssetsHeldForHedging" xlink:label="ifrs-full_DerivativeFinancialAssetsHeldForHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DerivativeFinancialAssetsHeldForHedging"
                            order="16"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DerivativeFinancialLiabilitiesHeldForHedging" xlink:label="ifrs-full_DerivativeFinancialLiabilitiesHeldForHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DerivativeFinancialLiabilitiesHeldForHedging"
                            order="17"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForAvailableforsaleFinancialAssetsExplanatory"
                            order="18"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBorrowingsExplanatory"
                            order="19"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForBusinessCombinationsAndGoodwillExplanatory"
                            order="20"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForCashFlowsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForCashFlowsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForCashFlowsExplanatory"
                            order="21"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForCollateralExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForCollateralExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForCollateralExplanatory"
                            order="22"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory"
                            order="23"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDeferredIncomeTaxExplanatory"
                            order="24"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDepreciationExpenseExplanatory"
                            order="25"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerecognitionOfFinancialInstrumentsExplanatory"
                            order="26"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory"
                            order="27"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory"
                            order="28"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDiscontinuedOperationsExplanatory"
                            order="29"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForDividendsExplanatory"
                            order="30"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory"
                            order="31"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForExpensesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForExpensesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForExpensesExplanatory"
                            order="32"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory"
                            order="33"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory"
                            order="34"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialAssetsExplanatory"
                            order="35"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialGuaranteesExplanatory"
                            order="36"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory"
                            order="37"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory"
                            order="38"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory"
                            order="39"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory"
                            order="40"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForGoodwillExplanatory"
                            order="41"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForHedgingExplanatory"
                            order="42"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForHeldtomaturityInvestmentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForHeldtomaturityInvestmentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForHeldtomaturityInvestmentsExplanatory"
                            order="43"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory"
                            order="44"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory"
                            order="45"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory"
                            order="46"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIncomeTaxExplanatory"
                            order="47"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsAndGoodwillExplanatory"
                            order="48"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForIntangibleAssetsOtherThanGoodwillExplanatory"
                            order="49"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory"
                            order="50"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociates"
                            order="51"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory"
                            order="52"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory"
                            order="53"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsInJointVentures"
                            order="54"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory"
                            order="55"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForLeasesExplanatory"
                            order="56"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForLoansAndReceivablesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForLoansAndReceivablesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForLoansAndReceivablesExplanatory"
                            order="57"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForMeasuringInventories"
                            order="58"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleAndDiscontinuedOperationsExplanatory"
                            order="59"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory"
                            order="60"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory"
                            order="61"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory"
                            order="62"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForReclassificationOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForReclassificationOfFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForReclassificationOfFinancialInstrumentsExplanatory"
                            order="63"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRecognitionOfRevenue"
                            order="64"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForRepurchaseAndReverseRepurchaseAgreementsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRepurchaseAndReverseRepurchaseAgreementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRepurchaseAndReverseRepurchaseAgreementsExplanatory"
                            order="65"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory"
                            order="66"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForRestrictedCashAndCashEquivalentsExplanatory"
                            order="67"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSegmentReportingExplanatory"
                            order="68"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory"
                            order="69"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForSubsidiariesExplanatory"
                            order="70"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTerminationBenefits" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTerminationBenefits" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTerminationBenefits"
                            order="71"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTradingIncomeAndExpenseExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTradingIncomeAndExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTradingIncomeAndExpenseExplanatory"
                            order="72"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithNoncontrollingInterestsExplanatory"
                            order="73"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory"
                            order="74"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory" xlink:label="ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfAccountingPolicyForTreasurySharesExplanatory"
                            order="75"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:label="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities"
                            order="76"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfOtherAccountingPoliciesRelevantToUnderstandingOfFinancialStatements" xlink:label="ifrs-full_DescriptionOfOtherAccountingPoliciesRelevantToUnderstandingOfFinancialStatements" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfOtherAccountingPoliciesRelevantToUnderstandingOfFinancialStatements"
                            order="77"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DescriptionOfUncertaintiesOfEntitysAbilityToContinueAsGoingConcern" xlink:label="ifrs-full_DescriptionOfUncertaintiesOfEntitysAbilityToContinueAsGoingConcern" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DescriptionOfUncertaintiesOfEntitysAbilityToContinueAsGoingConcern"
                            order="78"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:label="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAccountingJudgementsAndEstimatesExplanatory"
                            order="79"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory"
                            order="80"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory" xlink:label="ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAllowanceForCreditLossesExplanatory"
                            order="81"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAssetsAndLiabilitiesWithSignificantRiskOfMaterialAdjustmentExplanatory" xlink:label="ifrs-full_DisclosureOfAssetsAndLiabilitiesWithSignificantRiskOfMaterialAdjustmentExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAssetsAndLiabilitiesWithSignificantRiskOfMaterialAdjustmentExplanatory"
                            order="82"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:label="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAuditorsRemunerationExplanatory"
                            order="83"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfAuthorisationOfFinancialStatementsExplanatory"
                            order="84"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:label="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfBasisOfConsolidationExplanatory"
                            order="85"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory"
                            order="86"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:label="ifrs-full_DisclosureOfBorrowingsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfBorrowingsExplanatory"
                            order="87"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:label="ifrs-full_DisclosureOfBusinessCombinationsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfBusinessCombinationsExplanatory"
                            order="88"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCashAndBankBalancesAtCentralBanksExplanatory" xlink:label="ifrs-full_DisclosureOfCashAndBankBalancesAtCentralBanksExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCashAndBankBalancesAtCentralBanksExplanatory"
                            order="89"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:label="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCashAndCashEquivalentsExplanatory"
                            order="90"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory" xlink:label="ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory"
                            order="91"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory" xlink:label="ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfChangesInAccountingPoliciesExplanatory"
                            order="92"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfClaimsAndBenefitsPaidExplanatory" xlink:label="ifrs-full_DisclosureOfClaimsAndBenefitsPaidExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfClaimsAndBenefitsPaidExplanatory"
                            order="93"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCollateralExplanatory" xlink:label="ifrs-full_DisclosureOfCollateralExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCollateralExplanatory"
                            order="94"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory"
                            order="95"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:label="ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCommitmentsExplanatory"
                            order="96"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfContingentLiabilitiesExplanatory"
                            order="97"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfCreditRiskExplanatory" xlink:label="ifrs-full_DisclosureOfCreditRiskExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfCreditRiskExplanatory"
                            order="98"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDeferredAcquisitionCostsArisingFromInsuranceContractsExplanatory"
                            order="99"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDeferredIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredIncomeExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDeferredIncomeExplanatory"
                            order="100"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:label="ifrs-full_DisclosureOfDeferredTaxesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDeferredTaxesExplanatory"
                            order="101"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDepositsFromBanksExplanatory" xlink:label="ifrs-full_DisclosureOfDepositsFromBanksExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDepositsFromBanksExplanatory"
                            order="102"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDepositsFromCustomersExplanatory" xlink:label="ifrs-full_DisclosureOfDepositsFromCustomersExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDepositsFromCustomersExplanatory"
                            order="103"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDepreciationAndAmortisationExpenseExplanatory"
                            order="104"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDerivativeFinancialInstrumentsExplanatory"
                            order="105"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfDividendsExplanatory" xlink:label="ifrs-full_DisclosureOfDividendsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfDividendsExplanatory"
                            order="106"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:label="ifrs-full_DisclosureOfEarningsPerShareExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfEarningsPerShareExplanatory"
                            order="107"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:label="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfEffectOfChangesInForeignExchangeRatesExplanatory"
                            order="108"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:label="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfEmployeeBenefitsExplanatory"
                            order="109"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:label="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfEntitysReportableSegmentsExplanatory"
                            order="110"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:label="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"
                            order="111"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfExpensesExplanatory" xlink:label="ifrs-full_DisclosureOfExpensesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfExpensesExplanatory"
                            order="112"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFairValueMeasurementExplanatory"
                            order="113"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFairValueOfFinancialInstrumentsExplanatory"
                            order="114"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFeeAndCommissionIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfFeeAndCommissionIncomeExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFeeAndCommissionIncomeExpenseExplanatory"
                            order="115"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfFinanceIncomeExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinanceIncomeExplanatory"
                            order="116"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialAssetsHeldForTradingExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialAssetsHeldForTradingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialAssetsHeldForTradingExplanatory"
                            order="117"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsAtFairValueThroughProfitOrLossExplanatory"
                            order="118"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsDesignatedAtFairValueThroughProfitOrLossExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsDesignatedAtFairValueThroughProfitOrLossExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsDesignatedAtFairValueThroughProfitOrLossExplanatory"
                            order="119"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsHeldForTradingExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsHeldForTradingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialInstrumentsHeldForTradingExplanatory"
                            order="120"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialLiabilitiesHeldForTradingExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialLiabilitiesHeldForTradingExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialLiabilitiesHeldForTradingExplanatory"
                            order="121"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:label="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfFinancialRiskManagementExplanatory"
                            order="122"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfGeneralAndAdministrativeExpenseExplanatory"
                            order="123"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:label="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory"
                            order="124"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:label="ifrs-full_DisclosureOfGoingConcernExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfGoingConcernExplanatory"
                            order="125"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfGoodwillExplanatory" xlink:label="ifrs-full_DisclosureOfGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfGoodwillExplanatory"
                            order="126"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfImpairmentOfAssetsExplanatory"
                            order="127"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:label="ifrs-full_DisclosureOfIncomeTaxExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfIncomeTaxExplanatory"
                            order="128"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" xlink:label="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInformationAboutEmployeesExplanatory"
                            order="129"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:label="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory"
                            order="130"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInsuranceContractsExplanatory" xlink:label="ifrs-full_DisclosureOfInsuranceContractsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInsuranceContractsExplanatory"
                            order="131"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfIntangibleAssetsAndGoodwillExplanatory"
                            order="132"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfIntangibleAssetsExplanatory"
                            order="133"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfInterestExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInterestExpenseExplanatory"
                            order="134"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInterestIncomeExpenseExplanatory"
                            order="135"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInterestIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfInterestIncomeExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInterestIncomeExplanatory"
                            order="136"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInventoriesExplanatory" xlink:label="ifrs-full_DisclosureOfInventoriesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInventoriesExplanatory"
                            order="137"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInvestmentPropertyExplanatory" xlink:label="ifrs-full_DisclosureOfInvestmentPropertyExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInvestmentPropertyExplanatory"
                            order="138"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:label="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInvestmentsAccountedForUsingEquityMethodExplanatory"
                            order="139"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:label="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory"
                            order="140"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfIssuedCapitalExplanatory" xlink:label="ifrs-full_DisclosureOfIssuedCapitalExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfIssuedCapitalExplanatory"
                            order="141"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLeasePrepaymentsExplanatory" xlink:label="ifrs-full_DisclosureOfLeasePrepaymentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfLeasePrepaymentsExplanatory"
                            order="142"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLeasesExplanatory" xlink:label="ifrs-full_DisclosureOfLeasesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfLeasesExplanatory"
                            order="143"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLiquidityRiskExplanatory" xlink:label="ifrs-full_DisclosureOfLiquidityRiskExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfLiquidityRiskExplanatory"
                            order="144"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLoansAndAdvancesToBanksExplanatory" xlink:label="ifrs-full_DisclosureOfLoansAndAdvancesToBanksExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfLoansAndAdvancesToBanksExplanatory"
                            order="145"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfLoansAndAdvancesToCustomersExplanatory" xlink:label="ifrs-full_DisclosureOfLoansAndAdvancesToCustomersExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfLoansAndAdvancesToCustomersExplanatory"
                            order="146"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfMarketRiskExplanatory" xlink:label="ifrs-full_DisclosureOfMarketRiskExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfMarketRiskExplanatory"
                            order="147"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory" xlink:label="ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfNoncontrollingInterestsExplanatory"
                            order="148"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherAssetsExplanatory"
                            order="149"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherLiabilitiesExplanatory"
                            order="150"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherOperatingExpenseExplanatory"
                            order="151"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherOperatingIncomeExpenseExplanatory"
                            order="152"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory" xlink:label="ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherOperatingIncomeExplanatory"
                            order="153"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory"
                            order="154"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory" xlink:label="ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfPrepaymentsAndOtherAssetsExplanatory"
                            order="155"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:label="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory"
                            order="156"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfProvisionsExplanatory" xlink:label="ifrs-full_DisclosureOfProvisionsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfProvisionsExplanatory"
                            order="157"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReclassificationOfFinancialInstrumentsExplanatory" xlink:label="ifrs-full_DisclosureOfReclassificationOfFinancialInstrumentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfReclassificationOfFinancialInstrumentsExplanatory"
                            order="158"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:label="ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfRelatedPartyExplanatory"
                            order="159"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory" xlink:label="ifrs-full_DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfRepurchaseAndReverseRepurchaseAgreementsExplanatory"
                            order="160"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory" xlink:label="ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfReservesAndOtherEquityInterestExplanatory"
                            order="161"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory" xlink:label="ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfRestrictedCashAndCashEquivalentsExplanatory"
                            order="162"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRevenueExplanatory" xlink:label="ifrs-full_DisclosureOfRevenueExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfRevenueExplanatory"
                            order="163"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:label="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory"
                            order="164"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:label="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfSharebasedPaymentArrangementsExplanatory"
                            order="165"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:label="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory"
                            order="166"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesExplanatory"
                            order="167"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory"
                            order="168"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSubordinatedLiabilitiesExplanatory" xlink:label="ifrs-full_DisclosureOfSubordinatedLiabilitiesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfSubordinatedLiabilitiesExplanatory"
                            order="169"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory" xlink:label="ifrs-full_DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory"
                            order="170"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory" xlink:label="ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfTaxReceivablesAndPayablesExplanatory"
                            order="171"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:label="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory"
                            order="172"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTradingIncomeExpenseExplanatory" xlink:label="ifrs-full_DisclosureOfTradingIncomeExpenseExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfTradingIncomeExpenseExplanatory"
                            order="173"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTreasurySharesExplanatory" xlink:label="ifrs-full_DisclosureOfTreasurySharesExplanatory" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DisclosureOfTreasurySharesExplanatory"
                            order="174"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:label="ifrs-full_DividendsPaidClassifiedAsFinancingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DividendsPaidClassifiedAsFinancingActivities"
                            order="175"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsReceivedClassifiedAsInvestingActivities" xlink:label="ifrs-full_DividendsReceivedClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DividendsReceivedClassifiedAsInvestingActivities"
                            order="176"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsReceivedClassifiedAsOperatingActivities" xlink:label="ifrs-full_DividendsReceivedClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DividendsReceivedClassifiedAsOperatingActivities"
                            order="177"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DomicileOfEntity" xlink:label="ifrs-full_DomicileOfEntity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_DomicileOfEntity"
                            order="178"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:label="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_EffectOfExchangeRateChangesOnCashAndCashEquivalents"
                            order="179"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAndLiabilities" xlink:label="ifrs-full_EquityAndLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_EquityAndLiabilities"
                            order="180"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ExplanationOfAssumptionAboutFutureWithSignificantRiskOfResultingInMaterialAdjustments" xlink:label="ifrs-full_ExplanationOfAssumptionAboutFutureWithSignificantRiskOfResultingInMaterialAdjustments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ExplanationOfAssumptionAboutFutureWithSignificantRiskOfResultingInMaterialAdjustments"
                            order="181"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FeeAndCommissionExpense" xlink:label="ifrs-full_FeeAndCommissionExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FeeAndCommissionExpense"
                            order="182"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FeeAndCommissionIncome" xlink:label="ifrs-full_FeeAndCommissionIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FeeAndCommissionIncome"
                            order="183"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FeeAndCommissionIncomeExpense" xlink:label="ifrs-full_FeeAndCommissionIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FeeAndCommissionIncomeExpense"
                            order="184"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss" xlink:label="ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinanceIncomeExpensesFromReinsuranceContractsHeldRecognisedInProfitOrLoss"
                            order="185"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtAmortisedCost" xlink:label="ifrs-full_FinancialAssetsAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsAtAmortisedCost"
                            order="186"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss" xlink:label="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLoss"
                            order="187"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" xlink:label="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading"
                            order="188"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition" xlink:label="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition"
                            order="189"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue" xlink:label="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossMandatorilyMeasuredAtFairValue"
                            order="190"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome" xlink:label="ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome"
                            order="191"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:label="ifrs-full_FinancialLiabilitiesAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialLiabilitiesAtAmortisedCost"
                            order="192"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossClassifiedAsHeldForTrading"
                            order="193"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition" xlink:label="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedAsUponInitialRecognition"
                            order="194"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:label="ifrs-full_GainsLossesOnDisposalsOfInvestments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_GainsLossesOnDisposalsOfInvestments"
                            order="195"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:label="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9"
                            order="196"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:label="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities"
                            order="197"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:label="ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_IncomeTaxExpenseContinuingOperations"
                            order="198"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:label="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges"
                            order="199"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsIssuedThatAreAssets" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InsuranceContractsIssuedThatAreAssets"
                            order="200"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsIssuedThatAreLiabilities" xlink:label="ifrs-full_InsuranceContractsIssuedThatAreLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InsuranceContractsIssuedThatAreLiabilities"
                            order="201"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss" xlink:label="ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InsuranceFinanceIncomeExpensesFromInsuranceContractsIssuedRecognisedInProfitOrLoss"
                            order="202"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceServiceExpensesFromInsuranceContractsIssued" xlink:label="ifrs-full_InsuranceServiceExpensesFromInsuranceContractsIssued" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InsuranceServiceExpensesFromInsuranceContractsIssued"
                            order="203"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceServiceResult" xlink:label="ifrs-full_InsuranceServiceResult" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InsuranceServiceResult"
                            order="204"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:label="ifrs-full_InterestPaidClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InterestPaidClassifiedAsOperatingActivities"
                            order="205"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:label="ifrs-full_InterestReceivedClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InterestReceivedClassifiedAsOperatingActivities"
                            order="206"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestRevenueCalculatedUsingEffectiveInterestMethod" xlink:label="ifrs-full_InterestRevenueCalculatedUsingEffectiveInterestMethod" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_InterestRevenueCalculatedUsingEffectiveInterestMethod"
                            order="207"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapital" xlink:label="ifrs-full_IssuedCapital" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_IssuedCapital"
                            order="208"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LegalFormOfEntity" xlink:label="ifrs-full_LegalFormOfEntity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_LegalFormOfEntity"
                            order="209"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale" xlink:label="ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale"
                            order="210"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LoansAndAdvancesToBanks" xlink:label="ifrs-full_LoansAndAdvancesToBanks" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_LoansAndAdvancesToBanks"
                            order="211"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LoansAndAdvancesToCustomers" xlink:label="ifrs-full_LoansAndAdvancesToCustomers" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_LoansAndAdvancesToCustomers"
                            order="212"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfParentEntity" xlink:label="ifrs-full_NameOfParentEntity" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_NameOfParentEntity"
                            order="213"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:label="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_NameOfReportingEntityOrOtherMeansOfIdentification"
                            order="214"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NameOfUltimateParentOfGroup" xlink:label="ifrs-full_NameOfUltimateParentOfGroup" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_NameOfUltimateParentOfGroup"
                            order="215"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale" xlink:label="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_NoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSale"
                            order="216"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherAssets" xlink:label="ifrs-full_OtherAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherAssets"
                            order="217"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashPaymentsFromOperatingActivities" xlink:label="ifrs-full_OtherCashPaymentsFromOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherCashPaymentsFromOperatingActivities"
                            order="218"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:label="ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"
                            order="219"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashReceiptsFromOperatingActivities" xlink:label="ifrs-full_OtherCashReceiptsFromOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherCashReceiptsFromOperatingActivities"
                            order="220"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:label="ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherCashReceiptsFromSalesOfEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities"
                            order="221"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax"
                            order="222"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax"
                            order="223"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherLiabilities" xlink:label="ifrs-full_OtherLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherLiabilities"
                            order="224"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherOperatingIncomeExpense" xlink:label="ifrs-full_OtherOperatingIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_OtherOperatingIncomeExpense"
                            order="225"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsToAndOnBehalfOfEmployees" xlink:label="ifrs-full_PaymentsToAndOnBehalfOfEmployees" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_PaymentsToAndOnBehalfOfEmployees"
                            order="226"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PrincipalPlaceOfBusiness" xlink:label="ifrs-full_PrincipalPlaceOfBusiness" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_PrincipalPlaceOfBusiness"
                            order="227"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ProceedsFromSalesOfIntangibleAssetsClassifiedAsInvestingActivities"
                            order="228"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:label="ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ProfitLossAttributableToOwnersOfParent"
                            order="229"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Provisions" xlink:label="ifrs-full_Provisions" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_Provisions"
                            order="230"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:label="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"
                            order="231"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReinsuranceContractsHeldThatAreAssets" xlink:label="ifrs-full_ReinsuranceContractsHeldThatAreAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ReinsuranceContractsHeldThatAreAssets"
                            order="232"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReinsuranceContractsHeldThatAreLiabilities" xlink:label="ifrs-full_ReinsuranceContractsHeldThatAreLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ReinsuranceContractsHeldThatAreLiabilities"
                            order="233"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RevenueFromDividends" xlink:label="ifrs-full_RevenueFromDividends" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_RevenueFromDividends"
                            order="234"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax"
                            order="235"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:label="ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossNetOfTax"
                            order="236"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SharePremium" xlink:label="ifrs-full_SharePremium" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_SharePremium"
                            order="237"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfIFRSCompliance" xlink:label="ifrs-full_StatementOfIFRSCompliance" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_StatementOfIFRSCompliance"
                            order="238"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradingIncomeExpense" xlink:label="ifrs-full_TradingIncomeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_TradingIncomeExpense"
                            order="239"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TreasuryShares" xlink:label="ifrs-full_TreasuryShares" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ifrs-full_TreasuryShares"
                            order="240"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtAmortisedCost"
                            order="241"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="242"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue" xlink:label="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInFinancialAssetsDesignatedAtFairValue"
                            order="243"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue" xlink:label="ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForDecreaseIncreaseInOtherFinancialAssetsMandatorilyAtFairValue"
                            order="244"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost" xlink:label="ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForIncreaseDecreaseInFinancialLiabilitiesAtAmortisedCost"
                            order="245"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue" xlink:label="ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdjustmentsForIncreaseDecreaseOfFinancialLiabilitiesDesignatedAtFairValue"
                            order="246"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_AdministrativeExpenseStaffCosts" xlink:label="ext_AdministrativeExpenseStaffCosts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_AdministrativeExpenseStaffCosts"
                            order="247"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:label="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_BalanceOfFinanceIncomeExpensesFromInsuranceActivities"
                            order="248"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowHedging" xlink:label="ext_CashFlowHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowHedging"
                            order="249"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities" xlink:label="ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowsFromIncreaseDecreaseOfOtherLiabilities"
                            order="250"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromInvestingActivities" xlink:label="ext_CashFlowsFromInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowsFromInvestingActivities"
                            order="251"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowsFromUsedInFinancialAssetsClassifiedAsOperatingActivities"
                            order="252"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:label="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowsFromUsedInFinancialLiabilitiesClassifiedAsOperatingActivities"
                            order="253"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashFlowsFromUsedInInsuranceReinsuranceContracts" xlink:label="ext_CashFlowsFromUsedInInsuranceReinsuranceContracts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashFlowsFromUsedInInsuranceReinsuranceContracts"
                            order="254"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded" xlink:label="ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_CashReceiptsAndPaymentsFromInsuranceContractsIssuedAndReinsuranceCeded"
                            order="255"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets" xlink:label="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossTangibleAssets"
                            order="256"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_EquityInstruments" xlink:label="ext_EquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_EquityInstruments"
                            order="257"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ExpensesFromReinsuranceContractsHeld" xlink:label="ext_ExpensesFromReinsuranceContractsHeld" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ExpensesFromReinsuranceContractsHeld"
                            order="258"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ForeignExchangeDifferences" xlink:label="ext_ForeignExchangeDifferences" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ForeignExchangeDifferences"
                            order="259"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ForeignInvestmentsHedging" xlink:label="ext_ForeignInvestmentsHedging" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ForeignInvestmentsHedging"
                            order="260"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost" xlink:label="ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainLossArisingFromDisposalOfFinancialAssetsMeasuredAtAmortisedCost"
                            order="261"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainLossOnDisposalsOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="262"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesFromContractualChangesWithoutDerecognition" xlink:label="ext_GainsLossesFromContractualChangesWithoutDerecognition" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainsLossesFromContractualChangesWithoutDerecognition"
                            order="263"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities" xlink:label="ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainsLossesOnDisposalsAndRepurchaseOfFinancialAssetsAndLiabilities"
                            order="264"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss" xlink:label="ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainsLossesOnFinancialAssetsLiabilitiesMandatorilyAtFairValueThroughProfitOrLoss"
                            order="265"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" xlink:label="ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GainsLossesOnFinancialAssetsOtherThanEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax"
                            order="266"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_GrossIncome" xlink:label="ext_GrossIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_GrossIncome"
                            order="267"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost" xlink:label="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtAmortisedCost"
                            order="268"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:label="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ImpairmentLossImpairmentGainAndReversalOfImpairmentLossDeterminedInAccordanceWithIFRS9OnFinancialAssetsAtFairValueThroughOtherComprehensiveIncome"
                            order="269"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_IncomeFromReinsuranceContractsHeld" xlink:label="ext_IncomeFromReinsuranceContractsHeld" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_IncomeFromReinsuranceContractsHeld"
                            order="270"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceAssets" xlink:label="ext_InsuranceAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_InsuranceAssets"
                            order="271"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_InsuranceLiabilities" xlink:label="ext_InsuranceLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_InsuranceLiabilities"
                            order="272"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:label="ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_LiabilitiesFairValueChangesOfTheHedgedItemsInPortfolioHedgeOfInterestRateRisk"
                            order="273"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_LiquidityGeneratedAbsorbedByOtherAssets" xlink:label="ext_LiquidityGeneratedAbsorbedByOtherAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_LiquidityGeneratedAbsorbedByOtherAssets"
                            order="274"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets" xlink:label="ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_NetCashFlowsFromInsuranceContractsIssuedWhichAreLiabilitiesAssets"
                            order="275"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities" xlink:label="ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_NetCashFlowsFromReinsuranceCessionsConstitutingAssetsLiabilities"
                            order="276"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations" xlink:label="ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_NetCashFlowsFromUsedInReceiptsPaymentsOfFeesAndCommissionsFromOperations"
                            order="277"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndCharges" xlink:label="ext_NetProvisionsForRisksAndCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_NetProvisionsForRisksAndCharges"
                            order="278"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven" xlink:label="ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_NetProvisionsForRisksAndChargesCommitmentsAndFinancialGuaranteesGiven"
                            order="279"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OperatingCosts" xlink:label="ext_OperatingCosts" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OperatingCosts"
                            order="280"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherAdministrativeExpense" xlink:label="ext_OtherAdministrativeExpense" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherAdministrativeExpense"
                            order="281"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax" xlink:label="ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherCashInflowsOutflowsFromDiscontinuedOperationsNetOfTax"
                            order="282"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxIntangibleAssets"
                            order="283"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxNonCurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleNotToBeReclassifiedToProfitOrLoss"
                            order="284"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxOnHedgingInstrumentsNonDesignatedItems"
                            order="285"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets" xlink:label="ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherComprehensiveIncomeNetOfTaxTangibleAssets"
                            order="286"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss" xlink:label="ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherComprehensiveIncomeRelatedToNoncurrentAssetsAndDisposalGroupsClassifiedAsHeldForSaleToBeReclassifiedToProfitOrLoss"
                            order="287"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments" xlink:label="ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherInflowsOutflowsFromIssuePurchaseOfEquityInstruments"
                            order="288"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares" xlink:label="ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherInflowsOutflowsFromIssuePurchaseOfTreasuryShares"
                            order="289"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherProvisionsForRiskAndCharges" xlink:label="ext_OtherProvisionsForRiskAndCharges" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherProvisionsForRiskAndCharges"
                            order="290"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_OtherReservesOther" xlink:label="ext_OtherReservesOther" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_OtherReservesOther"
                            order="291"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PostRetirementBenefitObligation" xlink:label="ext_PostRetirementBenefitObligation" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_PostRetirementBenefitObligation"
                            order="292"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities" xlink:label="ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ProceedsFromSalesOfTangibleAssetsClassifiedAsInvestingActivities"
                            order="293"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:label="ext_ProfitLossFromFinancialAndInsuranceActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ProfitLossFromFinancialAndInsuranceActivities"
                            order="294"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProvisionForCommittmentsAndGuaranteesGiven" xlink:label="ext_ProvisionForCommittmentsAndGuaranteesGiven" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ProvisionForCommittmentsAndGuaranteesGiven"
                            order="295"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ProvisionForEmployeeSeverancesPay" xlink:label="ext_ProvisionForEmployeeSeverancesPay" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ProvisionForEmployeeSeverancesPay"
                            order="296"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities" xlink:label="ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_PurchaseOfTangibleAssetsClassifiedAsInvestingActivities"
                            order="297"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_RedeemableShares" xlink:label="ext_RedeemableShares" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_RedeemableShares"
                            order="298"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TangibleAssets" xlink:label="ext_TangibleAssets" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_TangibleAssets"
                            order="299"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_TotalProfitLossAttributableToOwnersOfParent" xlink:label="ext_TotalProfitLossAttributableToOwnersOfParent" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_TotalProfitLossAttributableToOwnersOfParent"
                            order="300"
                          xlink:type="arc"/>
      <link:loc xlink:href="PSNL19R2RXX5U3QWHI44-2025-06-30.xsd#ext_ValuationReserves" xlink:label="ext_ValuationReserves" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
                          xlink:from="esef_cor_LineItemsNotDimensionallyQualifiedPlaceholder"
                          xlink:to="ext_ValuationReserves"
                            order="301"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable" xlink:label="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis" xlink:label="ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesTable"
                          xlink:to="ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsAxis" xlink:label="ifrs-full_InsuranceContractsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfInsuranceRevenueTable"
                          xlink:to="ifrs-full_InsuranceContractsAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="ifrs-full_TypesOfRisksAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemTable"
                          xlink:to="ifrs-full_TypesOfRisksAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable" xlink:label="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:label="ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfAnalysisOfSingleAmountOfDiscontinuedOperationsTable"
                          xlink:to="ifrs-full_ContinuingAndDiscontinuedOperationsAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable" xlink:label="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfOverlayApproachReclassificationAxis" xlink:label="ifrs-full_EffectOfOverlayApproachReclassificationAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable"
                          xlink:to="ifrs-full_EffectOfOverlayApproachReclassificationAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfEffectOfOverlayApproachReclassificationOnProfitOrLossForAssociatesTable"
                          xlink:to="ifrs-full_SignificantInvestmentsInAssociatesAxis"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfAssetsAxis" xlink:label="ifrs-full_ClassesOfAssetsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable"
                          xlink:to="ifrs-full_ClassesOfAssetsAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable"
                          xlink:to="ifrs-full_LevelsOfFairValueHierarchyAxis"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MeasurementAxis" xlink:label="ifrs-full_MeasurementAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfAssetsTable"
                          xlink:to="ifrs-full_MeasurementAxis"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable" xlink:label="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfLiabilitiesAxis" xlink:label="ifrs-full_ClassesOfLiabilitiesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable"
                          xlink:to="ifrs-full_ClassesOfLiabilitiesAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable"
                          xlink:to="ifrs-full_LevelsOfFairValueHierarchyAxis"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MeasurementAxis" xlink:label="ifrs-full_MeasurementAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFairValueMeasurementOfLiabilitiesTable"
                          xlink:to="ifrs-full_MeasurementAxis"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:label="ifrs-full_DisclosureOfFinancialInstrumentsTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfFinancialInstrumentsTable"
                          xlink:to="ifrs-full_ClassesOfFinancialInstrumentsAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfJointVenturesTable" xlink:label="ifrs-full_DisclosureOfJointVenturesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesAxis" xlink:label="ifrs-full_JointVenturesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfJointVenturesTable"
                          xlink:to="ifrs-full_JointVenturesAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:label="ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SegmentConsolidationItemsAxis" xlink:label="ifrs-full_SegmentConsolidationItemsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsTable"
                          xlink:to="ifrs-full_SegmentConsolidationItemsAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SegmentsAxis" xlink:label="ifrs-full_SegmentsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfOperatingSegmentsTable"
                          xlink:to="ifrs-full_SegmentsAxis"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable" xlink:label="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable"
                          xlink:to="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable"
                          xlink:to="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis"
                            order="2"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MethodsOfGenerationAxis" xlink:label="ifrs-full_MethodsOfGenerationAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfReconciliationOfChangesInIntangibleAssetsAndGoodwillTable"
                          xlink:to="ifrs-full_MethodsOfGenerationAxis"
                            order="3"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInAssociatesTable"
                          xlink:to="ifrs-full_SignificantInvestmentsInAssociatesAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:label="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesTable"
                          xlink:to="ifrs-full_SignificantInvestmentsInSubsidiariesAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:label="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable"
                          xlink:to="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/hypercube-dimension https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_StatementOfChangesInEquityTable" xlink:label="ifrs-full_StatementOfChangesInEquityTable" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_StatementOfChangesInEquityTable"
                          xlink:to="ifrs-full_ComponentsOfEquityAxis"
                            order="1"
                          xlink:type="arc"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension"
                          xlink:from="ifrs-full_StatementOfChangesInEquityTable"
                          xlink:to="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis"
                            order="2"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600e" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis" xlink:label="ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RestatedMember" xlink:label="ifrs-full_RestatedMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_EffectOfAdjustmentsMadeWhenEntityChangedBasisOfDisaggregationOfInsuranceFinanceIncomeExpensesBetweenProfitOrLossAndOtherComprehensiveIncomeForContractsWithDirectParticipationFeaturesAxis"
                          xlink:to="ifrs-full_RestatedMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_17_role-836600b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsAxis" xlink:label="ifrs-full_InsuranceContractsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InsuranceContractsMember2017" xlink:label="ifrs-full_InsuranceContractsMember2017" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_InsuranceContractsAxis"
                          xlink:to="ifrs-full_InsuranceContractsMember2017"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-861000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksAxis" xlink:label="ifrs-full_TypesOfRisksAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TypesOfRisksMember" xlink:label="ifrs-full_TypesOfRisksMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_TypesOfRisksAxis"
                          xlink:to="ifrs-full_TypesOfRisksMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_5_role-825900" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:label="ifrs-full_ContinuingAndDiscontinuedOperationsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ContinuingOperationsMember" xlink:label="ifrs-full_ContinuingOperationsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ContinuingAndDiscontinuedOperationsAxis"
                          xlink:to="ifrs-full_ContinuingOperationsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EffectOfOverlayApproachReclassificationAxis" xlink:label="ifrs-full_EffectOfOverlayApproachReclassificationAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InAccordanceWithIFRS9Member" xlink:label="ifrs-full_InAccordanceWithIFRS9Member" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_EffectOfOverlayApproachReclassificationAxis"
                          xlink:to="ifrs-full_InAccordanceWithIFRS9Member"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_4_role-836500f" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForAssociatesMember" xlink:label="ifrs-full_EntitysTotalForAssociatesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_SignificantInvestmentsInAssociatesAxis"
                          xlink:to="ifrs-full_EntitysTotalForAssociatesMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfAssetsAxis" xlink:label="ifrs-full_ClassesOfAssetsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfAssetsMember" xlink:label="ifrs-full_ClassesOfAssetsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ClassesOfAssetsAxis"
                          xlink:to="ifrs-full_ClassesOfAssetsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:label="ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_LevelsOfFairValueHierarchyAxis"
                          xlink:to="ifrs-full_AllLevelsOfFairValueHierarchyMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MeasurementAxis" xlink:label="ifrs-full_MeasurementAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AggregatedMeasurementMember" xlink:label="ifrs-full_AggregatedMeasurementMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_MeasurementAxis"
                          xlink:to="ifrs-full_AggregatedMeasurementMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfLiabilitiesAxis" xlink:label="ifrs-full_ClassesOfLiabilitiesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LiabilitiesMember" xlink:label="ifrs-full_LiabilitiesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ClassesOfLiabilitiesAxis"
                          xlink:to="ifrs-full_LiabilitiesMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:label="ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:label="ifrs-full_AllLevelsOfFairValueHierarchyMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_LevelsOfFairValueHierarchyAxis"
                          xlink:to="ifrs-full_AllLevelsOfFairValueHierarchyMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_13_role-823000a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MeasurementAxis" xlink:label="ifrs-full_MeasurementAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AggregatedMeasurementMember" xlink:label="ifrs-full_AggregatedMeasurementMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_MeasurementAxis"
                          xlink:to="ifrs-full_AggregatedMeasurementMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_7_role-822390d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfFinancialInstrumentsMember" xlink:label="ifrs-full_ClassesOfFinancialInstrumentsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ClassesOfFinancialInstrumentsAxis"
                          xlink:to="ifrs-full_ClassesOfFinancialInstrumentsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700d" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_JointVenturesAxis" xlink:label="ifrs-full_JointVenturesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForJointVenturesMember" xlink:label="ifrs-full_EntitysTotalForJointVenturesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_JointVenturesAxis"
                          xlink:to="ifrs-full_EntitysTotalForJointVenturesMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SegmentConsolidationItemsAxis" xlink:label="ifrs-full_SegmentConsolidationItemsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSegmentConsolidationItemsMember" xlink:label="ifrs-full_EntitysTotalForSegmentConsolidationItemsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_SegmentConsolidationItemsAxis"
                          xlink:to="ifrs-full_EntitysTotalForSegmentConsolidationItemsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_8_role-871100a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SegmentsAxis" xlink:label="ifrs-full_SegmentsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SegmentsMember" xlink:label="ifrs-full_SegmentsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_SegmentsAxis"
                          xlink:to="ifrs-full_SegmentsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:label="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CarryingAmountMember" xlink:label="ifrs-full_CarryingAmountMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis"
                          xlink:to="ifrs-full_CarryingAmountMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:label="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IntangibleAssetsAndGoodwillMember" xlink:label="ifrs-full_IntangibleAssetsAndGoodwillMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis"
                          xlink:to="ifrs-full_IntangibleAssetsAndGoodwillMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_38_role-823180a" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MethodsOfGenerationAxis" xlink:label="ifrs-full_MethodsOfGenerationAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_MethodsOfGenerationMember" xlink:label="ifrs-full_MethodsOfGenerationMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_MethodsOfGenerationAxis"
                          xlink:to="ifrs-full_MethodsOfGenerationMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700b" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:label="ifrs-full_SignificantInvestmentsInAssociatesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForAssociatesMember" xlink:label="ifrs-full_EntitysTotalForAssociatesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_SignificantInvestmentsInAssociatesAxis"
                          xlink:to="ifrs-full_EntitysTotalForAssociatesMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ifrs_12_role-825700" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:label="ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EntitysTotalForSubsidiariesMember" xlink:label="ifrs-full_EntitysTotalForSubsidiariesMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_SignificantInvestmentsInSubsidiariesAxis"
                          xlink:to="ifrs-full_EntitysTotalForSubsidiariesMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_12_role-835110" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:label="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis"
                          xlink:to="ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <!-- http://xbrl.org/int/dim/arcrole/dimension-domain https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000 -->
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComponentsOfEquityAxis" xlink:label="ifrs-full_ComponentsOfEquityAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityMember" xlink:label="ifrs-full_EquityMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_ComponentsOfEquityAxis"
                          xlink:to="ifrs-full_EquityMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>
   <link:definitionLink xlink:role="https://www.mediobanca.com/xbrl/role/all/ias_1_role-610000" xlink:type="extended">
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:label="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="locator"/>
      <link:loc xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RestatedMember" xlink:label="ifrs-full_RestatedMember" xlink:type="locator"/>
      <link:definitionArc
                          xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
                          xlink:from="ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis"
                          xlink:to="ifrs-full_RestatedMember"
                            order="1"
                          xlink:type="arc"/>
   </link:definitionLink>

</link:linkbase>