/ Dictionary / Index C cellulase: Meaning and Definition of Find definitions for: cel•lu•lase Pronunciation: (sel'yu-lās", -lāz"), [key] — n. Biochem. any of several enzymes, produced primarily by fungi and bacteria, that catalyze the hydrolysis of cellulose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cellular respiration cellulate Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language