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1. (n.) pepsin
an enzyme, produced in the stomach, that in the presence of hydrochloric acid splits proteins into proteoses and peptones.
2. pepsin
a commercial preparation containing pepsin, obtained from hog stomachs, used chiefly as a digestive and as a ferment in making cheese.
Etymology: (1835–45; < Gk péps(is) digestion (pep-, base of péptein to digest +-sis -sis ) + -in1)
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| Definition of 'pepsin' |
Princeton's WordNet |
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1. (noun) pepsin
an enzyme produced in the stomach that splits proteins into peptones
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| Definition of 'pepsin' |
Webster Dictionary |
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1. (noun) pepsin
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
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| Definitions of 'pepsin' |
The Nuttall Encyclopedia |
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1. pepsin
an essential constituent of the gastric juice extracted from the stomach of the calf, sheep, and pig, and used in medicine to supply any defect of it in the stomach of a patient.
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Definitions of pepsin 
