/ Dictionary / Index I intracranial: Meaning and Definition of Find definitions for: in•tra•cra•ni•al Pronunciation: (in"tru-krā'nē-ul), [key] — adj. being or occurring within the skull. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intracranial (Thesaurus) Intracoastal Waterway intractable Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language