Source : Webster's Revised Unabridged Dictionary (1913)

Anencephalic \An*en`ce*phal"ic\, Anencephalous
\An`en*ceph"a*lous\, a. [Gr. ?, priv. + ? the brain: cf.
   {Encephalon}.] (Zo["o]l.)
   Without a brain; brainless. --Todd & B.

Source : WordNet®

anencephalic
     adj : characterized by partial or total absence of a brain [syn: {anencephalous}]