English word exocellulase comes from English exo- (Outside, external.), English cellulase

Detailed word origin of exocellulase

Dictionary entry	Language	Definition
exo-	English (eng)	Outside, external.
cellulase	English (eng)	(enzyme) An enzyme that catalyze the cellulolysis (or hydrolysis) of cellulose.
exocellulase	English (eng)	(enzyme) Any cellulase that hydrolyse glycoside links at the ends of cellulose chains.

Words with the same origin as exocellulase