/ Dictionary / Index D disaccharidase: Meaning and Definition of Find definitions for: di•sac•cha•ri•dase Pronunciation: (dī-sak'ur-i-dās", -dāz"), [key] — n. Biochem. an enzyme that catalyzes the hydrolysis of disaccharides, as sucrose or lactose, to produce monosaccharides, as fructose or glucose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: disaccharidase (Thesaurus) disabuse disaccharide Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language