Entry 1 sense Webster, 1913 Anencephalic /ăn-ĕnˌ-səf-ăl'-ĭk/ · An·en·ce·phal·ic · IPA /ænˌɛnsəfˈælɪk/ 01 a. Without a brain; brainless. 1. Without a brain; brainless.(Zool.)