(n.) An unorganized proteolytic ferment or enzyme contained in the secretory glands of the stomach. In the gastric juice it is united with dilute hydrochloric acid (0.2 per cent, approximately) and the two together constitute the active portion of the digestive fluid. It is the active agent in the gastric juice of all animals.

beta-amylase carbohydrase coenzyme deoxyribonuclease digestant digester digestive esterase holoenzyme insulinase lipase lipoxidase pepsin polynucleotidase protease proteolytic enzyme ribonuclease saccharase saccharifying enzyme