Entry 1 sense Webster, 1913 Sacrificial /săkˌ-rəf-ĭsh'-əl/ · Sac·ri·fi·cial · IPA /ˈsæk.ɹɪ.fɪʃ.əl/ 01 a. Of or pertaining to sacrifice or sacrifices; consisting in sacrifice; performing sacrifice. 1. Of or pertaining to sacrifice or sacrifices; consisting in sacrifice; performing sacrifice.