Entry 1 sense Webster, 1913 Infralapsarianism · In·fra·lap·sa·ri·an·ism · IPA /ˌɪnfɹəˌlæpˈsɛ(ə)ɹi.ənɪzəm/ 01 n. The doctrine, belief, or principles of the Infralapsarians. 1. The doctrine, belief, or principles of the Infralapsarians.(Theor.)