<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by Broadridge Transform (tm) - http://www.broadridge.com -->
<!-- Created: Wed Sep 16 13:10:25 UTC 2026 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly"/>
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly"/>
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly"/>
  <roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#PerformanceMeasureOnly" roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly"/>
  <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"/>
  <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"/>
  <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"/>
  <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"/>
  <arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all"/>
  <definitionLink xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_S000008814Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_S000008814Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="dei_EntityDomain" xlink:to="ck0000050013_S000008814Member" order="11" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="oef_ShareClassDomain" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ShareClassDomain"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023985Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023985Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023985Member" order="11" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023994Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023994Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023994Member" order="12" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023992Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023992Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023992Member" order="13" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023996Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023996Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023996Member" order="14" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023997Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023997Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023997Member" order="15" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023993Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023993Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023993Member" order="16" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000068581Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000068581Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000068581Member" order="17" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000179951Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000179951Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000179951Member" order="18" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000223653Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000223653Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000223653Member" order="19" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000223654Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000223654Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000223654Member" order="20" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023986Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023986Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023986Member" order="21" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023987Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023987Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023987Member" order="22" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023988Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023988Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023988Member" order="23" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023989Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023989Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023989Member" order="24" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000023990Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000023990Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000023990Member" order="25" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000077898Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000077898Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000077898Member" order="26" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000148385Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000148385Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000148385Member" order="27" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_C000164804Member" xlink:href="ck0000050013-20260930.xsd#ck0000050013_C000164804Member"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_ShareClassDomain" xlink:to="ck0000050013_C000164804Member" order="28" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="oef_AllRisksMember" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AllRisksMember"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_MarketConditionsMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_MarketConditionsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_MarketConditionsMember" order="11" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_IssuerRisksMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_IssuerRisksMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_IssuerRisksMember" order="12" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_InvestingInIncomeorientedStocksMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_InvestingInIncomeorientedStocksMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_InvestingInIncomeorientedStocksMember" order="13" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_InvestingInDebtInstrumentsMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_InvestingInDebtInstrumentsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_InvestingInDebtInstrumentsMember" order="14" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_InvestingInLowerRatedDebtInstrumentsMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_InvestingInLowerRatedDebtInstrumentsMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_InvestingInLowerRatedDebtInstrumentsMember" order="15" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_InvestingOutsideTheUnitedStatesMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_InvestingOutsideTheUnitedStatesMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="ck0000050013_InvestingOutsideTheUnitedStatesMember" order="16" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="srt_ManagementMember" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ManagementMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_AllRisksMember" xlink:to="srt_ManagementMember" order="17" xbrldt:closed="true"/>
  </definitionLink>
  <definitionLink xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" xlink:type="extended">
    <loc xlink:type="locator" xlink:label="oef_PerformanceMeasureDomain" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_PerformanceMeasureDomain"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_index_SP_500_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_index_SP_500_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_PerformanceMeasureDomain" xlink:to="ck0000050013_index_SP_500_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" order="11" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_index_6535_SP_500_IndexBloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_index_6535_SP_500_IndexBloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember"/>
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_PerformanceMeasureDomain" xlink:to="ck0000050013_index_6535_SP_500_IndexBloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" order="12" xbrldt:closed="true"/>
    <loc xlink:type="locator" xlink:label="ck0000050013_index_Bloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" xlink:href="ck0000050013-20260930.xsd#ck0000050013_index_Bloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember"/>
<!-- [WMV7][cnqXdSTPwZ05Yb40TSeMu3qZyaJSeW5QgIjYGwGBSnB5e7wIuqQmY4KAkDwxYzldpoHrJCIOSgGNIgBOavuvThu7aG11WPi0gh8PAi3tFKdIbaBzvtXsxWw61pqcFDsyL5A8bfKAe48eWktFIZrevtj+ebkPQFjRABu2QM/0oIABGZzC0kykqiolbp1EBdGB7hnhfCgaJMvEEg5p8b86nkVdM2VQELowK7zbwbjlR5T/d7lsmDKCt8Ig10lWHJaS7c4wmwfm7wdRNftZ9AD1vfp/Fc3fr1chuSgtDfghUcNGshIin3MS7KRA+rjTU1RAE2KQQ5ny56x+EBDQCEXbdx57Ig/H06w5JzUvhpIxzlaiGpqRqTJjgML4Ku502v4=] CSR-->
    <definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="oef_PerformanceMeasureDomain" xlink:to="ck0000050013_index_Bloomberg_US_Aggregate_Index_reflects_no_deductions_for_sales_charges_account_fees_expenses_or_US_federal_income_taxesMember" order="13" xbrldt:closed="true"/>
  </definitionLink>
</linkbase>
