助じょ酵こう素そじょこうそMeanings1nouncoenzymeBiochemical term for a non-protein compound necessary for enzyme function. Often contrasted with 補酵素, which is a more common synonym.See also: 補酵素ビタミンB群ぐんの多おおくは助じょ酵こう素そとして働はたらく。Many B vitamins function as coenzymes.