/ Dictionary / Index H hydrolase: Meaning and Definition of Find definitions for: hy•dro•lase Pronunciation: (hī'dru-lās", -lāz"), [key] — n. Biochem. an enzyme that catalyzes hydrolysis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. HYDROLANT hydrologic cycle Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language