/ Dictionary / Index D deaminase: Meaning and Definition of Find definitions for: de•am•i•nase Pronunciation: (dē-am'u-nās", -nāz"), [key] — n. Biochem. an enzyme that releases the amino group from a compound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. deamidase deaminate Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language