/ Dictionary / Index E extracellular: Meaning and Definition of Find definitions for: ex•tra•cel•lu•lar Pronunciation: (ek"stru-sel'yu-lur), [key] — adj. Biol. outside a cell or cells. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: extracellular (Thesaurus) extracapsular extrachromosomal Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language