/ Dictionary / Index S split-brain: Meaning and Definition of Find definitions for: split-brain Pronunciation: (split'br?n'), [key] ? adj. having, involving, or pertaining to a severed corpus callosum. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. split split decision Related Content Daily Word Quiz: wizened Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language