Ma'anar ƙamus na "rage yawan zafin jiki" yana nufin tsari ko aikin rage zafin wani abu, yawanci abu, abu, ko muhalli. Hakanan yana iya komawa ga sakamakon irin wannan tsari, wanda shine raguwa a matakin zafi ko zafi da ke cikin wani tsari ko wuri. Ana iya amfani da wannan kalmar a yanayi daban-daban, ciki har da sanyaya abinci ko abin sha, rage zafin ɗaki ko gini, ko rage zafin jikin ɗan adam don magance zazzabi ko wasu yanayin kiwon lafiya.