/ Dictionary / Index A asparaginase: Meaning and Definition of Find definitions for: as•par•a•gi•nase Pronunciation: (u-spar'u-ju-nās", -nāz"), [key] — n. Biochem., Pharm. an enzyme that catalyzes the conversion of asparagine to aspartic acid and ammonia, used in the treatment of acute lymphocytic leukemia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: asparaginase (Thesaurus) asp asparagine Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language