En"zyme (?), n. [Pref. en- (Gr. in) + Gr. leaven.] Physiol. Chem.
An unorganized or unformed ferment, in distinction from an organized or living ferment; a soluble, or chemical, ferment. Ptyalin, pepsin, diastase, and rennet are good examples of enzymes.
© Webster 1913.