/ Dictionary / Index N neocortex: Meaning and Definition of Find definitions for: ne•o•cor•tex Pronunciation: (nē"ō-kôr'teks), [key] — pl. -ti•ces the largest and evolutionarily most recent portion of the cerebral cortex, composed of complex, layered tissue, the site of most of the higher brain functions. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: neocortex (Thesaurus) neoconservatism neocyanine Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language