/ Dictionary / Index M multicellular: Meaning and Definition of Find definitions for: mul•ti•cel•lu•lar Pronunciation: (mul"tē-sel'yu-lur, mul"tī-), [key] — adj. composed of several or many cells. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: multicellular (Thesaurus) multi multicoil Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language