Entry 1 sense Webster, 1913 Stearate /(stē"ȧ*rā̇t)/ · Ste·a·rate · IPA /ˈstɪəɹeɪt/ 01 n. A salt of stearic acid; as, ordinary soap consists largely of sodium or potassium stearates. 1. A salt of stearic acid; as, ordinary soap consists largely of sodium or potassium stearates.(Chem.)