zymoproteinEtymology*From Greek zymē, meaning "leaven" and Latin proteina, meaning "of first rank".*zymoprotein means A protein that acts as an enzyme or a coenzyme in a biochemical reaction. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounA protein that acts as an enzyme or a coenzyme in a biochemical reaction.