/ Dictionary / Index C cellulose: Meaning and Definition of Find definitions for: cel•lu•lose Pronunciation: (sel'yu-lōs"), [key] — n. an inert carbohydrate, (CHO), the chief constituent of the cell walls of plants and of wood, cotton, hemp, paper, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cellulose (Thesaurus) cellulolytic cellulose acetate Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language