Liberal Dictionary English Dictionary
pepsin or pep·sine [pep-sin] ExamplesWord Origin noun Biochemistry.
- an enzyme, produced in the stomach, that in the presence of hydrochloric acid splits proteins into proteoses and peptones.
- a commercial form of this substance, obtained from the stomachs of hogs, used as a digestive, as a ferment in the manufacture of cheese, etc.
Origin of pepsin 1835–45; Greek péps(is) digestion (pep-, base of péptein to digest + -sis -sis) + -in2 Examples from the Web for pepsin Historical Examples of pepsin
The pepsin is added to the mixture only when warm, and is injected at once.
William S. Sadler
Also the Old Boarder who was always under the influence of Pepsin.
The Wit and Humor of America, Volume VIII (of X)
Various
Now, I am going to add a pinch of pepsin to the contents in these tubes.
Lillian Elizabeth Roy
Synergia is claimed to be composed of pepsin, pancreatin, veg.
The Propaganda for Reform in Proprietary Medicines, Vol. 1 of 2
Various
This is a substance distinct from pepsin, but its action is the same.
Eugene Christian
British Dictionary definitions for pepsin pepsin pepsine noun
- a proteolytic enzyme produced in the stomach in the inactive form pepsinogen, which, when activated by acid, splits proteins into peptones
Word Origin for pepsin C19: via German from Greek pepsis, from peptein to digest Word Origin and History for pepsin n.
also pepsine, fermin in gastric juice, used medicinally for cases of indigestion, 1844, coined in German (Theodor Schwann, 1835) from Greek pepsis “digestion,” from stem pep- (see peptic) + -in (2).
pepsin in Medicine pepsin n.
- Any of various digestive enzymes found in gastric juice that catalyze the hydrolysis of proteins to peptides.
- A substance containing pepsin, obtained from the stomachs of hogs and calves and used as a digestive aid.
pepsin in Science pepsin [pĕp′sĭn]
- Any of various digestive enzymes found in vertebrate animals that catalyze the hydrolysis of proteins to peptides.