/ Dictionary / Index Z zymase: Meaning and Definition of Find definitions for: zy•mase Pronunciation: (zī'mās), [key] — n. Biochem. the complex of enzymes obtained from yeast, also occurring in bacteria and other organisms, that acts in alcoholic fermentation and other forms of glycolysis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zymase (Thesaurus) zygotic zyme Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language