Entry 1 sense Webster, 1913 Acclimature /(ăk`klī"mȧ*tū̇r; 135)/ · Ac·cli·ma·ture · IPA 01 n. The act of acclimating, or the state of being acclimated. 1. The act of acclimating, or the state of being acclimated.[R.]