anencephalic (adj.)

"having no brain" (biology), 1821, with -ic + Latinized form of Greek anenkephalos, from an- "not, without" (see an- (1)) + enkephalos "brain," "the brain," literally "within the head," from en "in" (see en- (2)) + kephalē "head;" see cephalo-. Related: Anencephalous (1834); anencephalia; anencephaly.