noun Zymogen n. (Physiol. Chem.) A mother substance, or antecedent, of an enzyme or chemical ferment; applied to such substances as, not being themselves actual ferments, may by internal changes give rise to a ferment. "The pancreas contains but little ready-made ferment, though there is present in it a body, zymogen, which gives birth to the ferment."
Collaborative International Dictionary of English 0.48
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