<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 5.21b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/SecurityOnly" xlink:href="https://xbrl.sec.gov/cef/2023/cef-2023.xsd#SecurityOnly" xlink:type="simple" />
    <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/AddressTypeOnly" xlink:href="https://xbrl.sec.gov/cef/2023/cef-2023.xsd#AddressTypeOnly" xlink:type="simple" />
    <link:roleRef roleURI="http://xbrl.sec.gov/cef/role/RiskOnly" xlink:href="https://xbrl.sec.gov/cef/2023/cef-2023.xsd#RiskOnly" xlink:type="simple" />
    <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: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#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/SecurityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/SecurityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/SecurityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/AddressTypeOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/cef/role/RiskOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/cef/2023/cef-2023.xsd#cef_AllRisksMember" xlink:label="loc_cefAllRisksMember" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_InvestmentAndMarketRiskMember" xlink:label="loc_ASGInvestmentAndMarketRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGInvestmentAndMarketRiskMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_MarketDiscountRiskMember" xlink:label="loc_ASGMarketDiscountRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGMarketDiscountRiskMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_CommonStockRiskMember" xlink:label="loc_ASGCommonStockRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGCommonStockRiskMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_ManagementRiskMember" xlink:label="loc_ASGManagementRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGManagementRiskMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_GrowthStockRiskMember" xlink:label="loc_ASGGrowthStockRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGGrowthStockRiskMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_SmallAndMidCapStockRiskMember" xlink:label="loc_ASGSmallAndMidCapStockRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGSmallAndMidCapStockRiskMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_ForeignSecuritiesRiskMember" xlink:label="loc_ASGForeignSecuritiesRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGForeignSecuritiesRiskMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_TaxRiskMember" xlink:label="loc_ASGTaxRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGTaxRiskMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_InflationRiskMember" xlink:label="loc_ASGInflationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGInflationRiskMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_DeflationRiskMember" xlink:label="loc_ASGDeflationRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGDeflationRiskMember" xlink:type="arc" order="90" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_MarketDisruptionAndGeopoliticalRiskMember" xlink:label="loc_ASGMarketDisruptionAndGeopoliticalRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGMarketDisruptionAndGeopoliticalRiskMember" xlink:type="arc" order="100" />
      <link:loc xlink:type="locator" xlink:href="asg-20231231.xsd#ASG_LegislationAndRegulatoryRiskMember" xlink:label="loc_ASGLegislationAndRegulatoryRiskMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_cefAllRisksMember" xlink:to="loc_ASGLegislationAndRegulatoryRiskMember" xlink:type="arc" order="110" />
    </link:definitionLink>
</link:linkbase>
