Entry 1 sense Webster, 1913 Imbibition · Im·bi·bi·tion · IPA /ɪm.bɪˈbɪ.ʃən/ 01 n. The act or process of imbibing, or absorbing; as, the post-mortem imbibition of poisons. 1. The act or process of imbibing, or absorbing; as, the post-mortem imbibition of poisons.