- a digestive enzyme in the gastric juice of stomach secretions that catalyzes the splitting of proteins into smaller, more absorptive peptides
- an extract of pepsin from the stomachs of calves, pigs, etc., formerly used as a digestive aid
Origin of pepsinGer: coined (1836) by T. Schwann (1810-82), German physiologist ; from Classical Greek pepsis, digestion ; from peptein, earlier pessein, to cook, digest ; from Indo-European base an unverified form pekw- from source Classical Latin coquere, cook
- 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.
Origin of pepsinGreek pepsis, digestion (from peptein, to digest; see pekw- in Indo-European roots) + –in.