Entry 2 senses · 2 variants Webster, 1913 Abstersive · Ab·ster·sive · IPA /æbˈstɝ.sɪv/ a. n. 01 a. Cleansing; purging. 1. Cleansing; purging. 02 n. Something cleansing. 1. Something cleansing. “The strong abstersive of some heroic magistrate.” — Milton.