enzyme: Meaning and Definition of

en•zyme

Pronunciation: (en'zīm), [key]
— n. Biochem.
  1. any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion. Cf. -ase.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: