\ˌrē-ˌlak-ˈsā-shən, ri-ˌlak-, especially British ˌrel-ək-\
: the act of relaxing or state of being relaxed <maximal abdominal relaxation was not evident until at least five minutes after the injection—Lancet>
: the reduction of contractile force in a muscle or muscle fiber; especially : the lengthening that typically characterizes inactive muscles or muscle fibers
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