SG Heritage Dictionary

Pepsin [Noun] Webster's Dictionary 1913

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.

Pepsin Encyclopedia Britannica

PEPSIN. See Nutrition, vol. xvii. p. 675 sq.

9th ed. Encyclopædia Britannica, vol. 18, p. 519
[8 words — estimated reading time: 1 minute]

Pepsinhydrochloric [Adjective] Webster's Dictionary 1913

Same as Peptohydrochloric.

Pepsinogen [Noun] Webster's Dictionary 1913

The antecedent of the ferment pepsin. A substance contained in the form of granules in the peptic cells of the gastric glands. It is readily convertible into pepsin. Also called propepsin.