Entry 1 sense Webster, 1913 Baptismal /băp-tĭz'-məl/ · Bap·tis·mal · IPA /bæptˈɪzməl/ 01 a. Pertaining to baptism; as, baptismal vows. 1. Pertaining to baptism; as, baptismal vows. Phrases & compounds Baptismal name — the Christian name, which is given at baptism.