The Collaborative International Dictionary of English v.0.48:
Anencephalic \An*en`ce*phal"ic\, Anencephalous \An`en*ceph"a*lous\, a. [Gr. ?, priv. + ? the brain: cf. Encephalon.] (Zool.) Without a brain; brainless. --Todd & B. [1913 Webster] AnenstWordNet (r) 3.0 (2006):
anencephalic adj 1: characterized by partial or total absence of a brain [syn: anencephalic, anencephalous]