/ Dictionary / Index U urase: Meaning and Definition of Find definitions for: u•rase Pronunciation: (yoor'ās, -āz), [key] — n. Biochem. urease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Urartu urate Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language