/ Dictionary / Index I intracellular: Meaning and Definition of Find definitions for: in•tra•cel•lu•lar Pronunciation: (in"tru-sel'yu-lur), [key] — adj. within a cell or cells. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: intracellular (Thesaurus) intracardiac Intracoastal Waterway 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