<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" 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 http://xbrl.org/2005/xbrldt http://www.xbrl.org/2005/xbrldt-2005.xsd" xmlns:cik0000737800="http://www.lordabbett.com/20250930">
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" />
	<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" />
	<link:arcroleRef arcroleURI="http://www.xbrl.org/2009/arcrole/dep-concept-deprecatedConcept" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/arcrole/deprecated-2009-12-16.xsd#dep-concept-deprecatedConcept" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable3" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable3" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable5" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable5" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable7" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable7" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable9" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable9" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable11" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable11" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable13" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable13" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable15" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable15" />
	<link:roleRef roleURI="http://www.lordabbett.com/20250930/role/RRRiskTable17" xlink:type="simple" xlink:href="c485bpos-20260128.xsd#RRRiskTable17" />
	<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#SeriesOnly" />
	<link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ClassOnly" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ShareholderFeesData" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#ShareholderFeesData" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#OperatingExpensesData" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#PerformanceMeasureOnly" />
	<link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#RiskOnly" />
	<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly">
		<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain" xlink:label="EntityDomain" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000031147Member" xlink:label="S000031147Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000031147Member" order="1.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000031146Member" xlink:label="S000031146Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000031146Member" order="2.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000007537Member" xlink:label="S000007537Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000007537Member" order="3.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000031145Member" xlink:label="S000031145Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000031145Member" order="4.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000049302Member" xlink:label="S000049302Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000049302Member" order="5.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000007531Member" xlink:label="S000007531Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000007531Member" order="6.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000007538Member" xlink:label="S000007538Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000007538Member" order="7.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_S000007539Member" xlink:label="S000007539Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000007539Member" order="8.0" />
	</link:definitionLink>
	<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
		<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096633Member" xlink:label="C000096633Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096633Member" order="1.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096635Member" xlink:label="C000096635Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096635Member" order="2.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096636Member" xlink:label="C000096636Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096636Member" order="3.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188228Member" xlink:label="C000188228Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188228Member" order="4.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096637Member" xlink:label="C000096637Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096637Member" order="5.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096630Member" xlink:label="C000096630Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096630Member" order="6.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096632Member" xlink:label="C000096632Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096632Member" order="7.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096627Member" xlink:label="C000096627Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096627Member" order="8.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188227Member" xlink:label="C000188227Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188227Member" order="9.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096628Member" xlink:label="C000096628Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096628Member" order="10.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096629Member" xlink:label="C000096629Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096629Member" order="11.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020589Member" xlink:label="C000020589Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020589Member" order="12.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020591Member" xlink:label="C000020591Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020591Member" order="13.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000054746Member" xlink:label="C000054746Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000054746Member" order="14.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188222Member" xlink:label="C000188222Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188222Member" order="15.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000050290Member" xlink:label="C000050290Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000050290Member" order="16.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020588Member" xlink:label="C000020588Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020588Member" order="17.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096621Member" xlink:label="C000096621Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096621Member" order="18.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096623Member" xlink:label="C000096623Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096623Member" order="19.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096624Member" xlink:label="C000096624Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096624Member" order="20.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188226Member" xlink:label="C000188226Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188226Member" order="21.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096625Member" xlink:label="C000096625Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096625Member" order="22.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096626Member" xlink:label="C000096626Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096626Member" order="23.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000155633Member" xlink:label="C000155633Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155633Member" order="24.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000155634Member" xlink:label="C000155634Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155634Member" order="25.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000155635Member" xlink:label="C000155635Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155635Member" order="26.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188229Member" xlink:label="C000188229Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188229Member" order="27.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000155636Member" xlink:label="C000155636Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000155636Member" order="28.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020576Member" xlink:label="C000020576Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020576Member" order="29.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020577Member" xlink:label="C000020577Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020577Member" order="30.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000054742Member" xlink:label="C000054742Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000054742Member" order="31.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188221Member" xlink:label="C000188221Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188221Member" order="32.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096845Member" xlink:label="C000096845Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096845Member" order="33.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020575Member" xlink:label="C000020575Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020575Member" order="34.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020593Member" xlink:label="C000020593Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020593Member" order="35.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000054747Member" xlink:label="C000054747Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000054747Member" order="36.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188223Member" xlink:label="C000188223Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188223Member" order="37.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096846Member" xlink:label="C000096846Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096846Member" order="38.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020592Member" xlink:label="C000020592Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020592Member" order="39.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020595Member" xlink:label="C000020595Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020595Member" order="40.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020596Member" xlink:label="C000020596Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020596Member" order="41.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000054748Member" xlink:label="C000054748Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000054748Member" order="42.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000188224Member" xlink:label="C000188224Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000188224Member" order="43.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000096847Member" xlink:label="C000096847Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000096847Member" order="44.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C000020594Member" xlink:label="C000020594Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000020594Member" order="45.0" />
	</link:definitionLink>
	<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly">
		<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_PerformanceMeasureDomain" xlink:label="PerformanceMeasureDomain" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBondShort1-5YearIndex31Member" xlink:label="BloombergMunicipalBondShort1-5YearIndex31Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBondShort1-5YearIndex31Member" order="1.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex33Member" xlink:label="BloombergUSAggregateBondIndex33Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex33Member" order="2.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_Bloomberg1-15YearMunicipalBondIndex35Member" xlink:label="Bloomberg1-15YearMunicipalBondIndex35Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="Bloomberg1-15YearMunicipalBondIndex35Member" order="3.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex37Member" xlink:label="BloombergUSAggregateBondIndex37Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex37Member" order="4.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBondIndex39Member" xlink:label="BloombergMunicipalBondIndex39Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBondIndex39Member" order="5.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex311Member" xlink:label="BloombergUSAggregateBondIndex311Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex311Member" order="6.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergHighYieldMunicipalBondIndex313Member" xlink:label="BloombergHighYieldMunicipalBondIndex313Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergHighYieldMunicipalBondIndex313Member" order="7.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_Bloomberg65HighYieldMunicipalBondIndex35BloombergMunicipalBondIndex315Member" xlink:label="Bloomberg65HighYieldMunicipalBondIndex35BloombergMunicipalBondIndex315Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="Bloomberg65HighYieldMunicipalBondIndex35BloombergMunicipalBondIndex315Member" order="8.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex317Member" xlink:label="BloombergUSAggregateBondIndex317Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex317Member" order="9.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBond1-8YearIndex319Member" xlink:label="BloombergMunicipalBond1-8YearIndex319Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBond1-8YearIndex319Member" order="10.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_C50BloombergMunicipalBond1-8YearIndex50BloombergMunicipalHighYield1-8YearIndex321Member" xlink:label="C50BloombergMunicipalBond1-8YearIndex50BloombergMunicipalHighYield1-8YearIndex321Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="C50BloombergMunicipalBond1-8YearIndex50BloombergMunicipalHighYield1-8YearIndex321Member" order="11.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex323Member" xlink:label="BloombergUSAggregateBondIndex323Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex323Member" order="12.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBondIndex325Member" xlink:label="BloombergMunicipalBondIndex325Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBondIndex325Member" order="13.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex327Member" xlink:label="BloombergUSAggregateBondIndex327Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex327Member" order="14.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBondIndex329Member" xlink:label="BloombergMunicipalBondIndex329Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBondIndex329Member" order="15.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex331Member" xlink:label="BloombergUSAggregateBondIndex331Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex331Member" order="16.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergMunicipalBondIndex333Member" xlink:label="BloombergMunicipalBondIndex333Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergMunicipalBondIndex333Member" order="17.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BloombergUSAggregateBondIndex335Member" xlink:label="BloombergUSAggregateBondIndex335Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="PerformanceMeasureDomain" xlink:to="BloombergUSAggregateBondIndex335Member" order="18.0" />
	</link:definitionLink>
	<link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly">
		<link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2025/oef-2025.xsd#oef_AllRisksMember" xlink:label="AllRisksMember" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_PRINCIPALRISKS2Member" xlink:label="PRINCIPALRISKS2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="PRINCIPALRISKS2Member" order="1.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_PortfolioManagementRisk2Member" xlink:label="PortfolioManagementRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="PortfolioManagementRisk2Member" order="2.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_MarketRisk2Member" xlink:label="MarketRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="MarketRisk2Member" order="3.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_FixedIncomeSecuritiesRisk2Member" xlink:label="FixedIncomeSecuritiesRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="FixedIncomeSecuritiesRisk2Member" order="4.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_MunicipalSecuritiesRisk2Member" xlink:label="MunicipalSecuritiesRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="MunicipalSecuritiesRisk2Member" order="5.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_BelowInvestmentGradeMunicipalBondRisk2Member" xlink:label="BelowInvestmentGradeMunicipalBondRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="BelowInvestmentGradeMunicipalBondRisk2Member" order="6.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_CallRisk2Member" xlink:label="CallRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="CallRisk2Member" order="7.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_CreditRisk2Member" xlink:label="CreditRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="CreditRisk2Member" order="8.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_DerivativesRisk2Member" xlink:label="DerivativesRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="DerivativesRisk2Member" order="9.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_InverseFloaterRisk2Member" xlink:label="InverseFloaterRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="InverseFloaterRisk2Member" order="10.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_ExtensionRisk2Member" xlink:label="ExtensionRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="ExtensionRisk2Member" order="11.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_GovernmentalRisk2Member" xlink:label="GovernmentalRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="GovernmentalRisk2Member" order="12.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_InterestRateRisk2Member" xlink:label="InterestRateRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="InterestRateRisk2Member" order="13.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_MunicipalAsset-BackedSecuritiesRisk2Member" xlink:label="MunicipalAsset-BackedSecuritiesRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="MunicipalAsset-BackedSecuritiesRisk2Member" order="14.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_LiquidityRedemptionRisk2Member" xlink:label="LiquidityRedemptionRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="LiquidityRedemptionRisk2Member" order="15.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_ShortDurationRisk2Member" xlink:label="ShortDurationRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="ShortDurationRisk2Member" order="16.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_StateandTerritoryRisk2Member" xlink:label="StateandTerritoryRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="StateandTerritoryRisk2Member" order="17.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_TaxabilityRisk2Member" xlink:label="TaxabilityRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="TaxabilityRisk2Member" order="18.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_ZeroCouponDeferredInterestPay-In-KindandCapitalAppreciationBondsRisk2Member" xlink:label="ZeroCouponDeferredInterestPay-In-KindandCapitalAppreciationBondsRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="ZeroCouponDeferredInterestPay-In-KindandCapitalAppreciationBondsRisk2Member" order="19.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_DefaultedBondsRisk2Member" xlink:label="DefaultedBondsRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="DefaultedBondsRisk2Member" order="20.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_DistressedDebtRisk2Member" xlink:label="DistressedDebtRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="DistressedDebtRisk2Member" order="21.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_StateSpecificRisk2Member" xlink:label="StateSpecificRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="StateSpecificRisk2Member" order="22.0" />
		<link:loc xlink:type="locator" xlink:href="c485bpos-20260128.xsd#cik0000737800_Non-DiversificationRisk2Member" xlink:label="Non-DiversificationRisk2Member" />
		<link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AllRisksMember" xlink:to="Non-DiversificationRisk2Member" order="23.0" />
	</link:definitionLink>
</link:linkbase>