Zymogen

Definition:

• (n.) 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.

Compare zymogen with other words:

zymogen vs. zymogene

pepsinogen vs. zymogen

content vs. zymogen

precursor vs. zymogen

enzyme vs. zymogen