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"Pepsin" Definition

noun

A digestive enzyme found in gastric juice that catalyzes the breakdown of protein to peptides.
A substance containing pepsin, obtained from the stomachs of hogs and calves and used as a digestive aid.
A protease of the stomach that breaks down most proteins to polypeptides.
A preparation containing pepsin that is obtained from the stomach especially of the hog and is used especially as a digestive aid.