/ Dictionary / Index G guanine deaminase: Meaning and Definition of Find definitions for: gua'nine deam'inase Pronunciation: [key] — Biochem. Biochem. an enzyme, found in liver, brain, spleen, pancreas, and kidney, that converts guanine into xanthine and ammonia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. guanine guano Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language