Entry 1 sense Webster, 1913 Abrogation /ăbˌ-rəg-āsh'-ən/ · Ab·ro·ga·tion · IPA /ˌæb.ɹəˈɡeɪ.ʃ(ə)n/ 01 n. The act of abrogating; repeal by authority. 1. The act of abrogating; repeal by authority.