pepsin
or pep·sine
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
1Words Nearby pepsin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use pepsin in a sentence
It is secreted by the gastric glands, and is transformed into pepsin by the action of a free acid.
A Manual of Clinical Diagnosis | James Campbell ToddDeficiency of rennin has the same significance as deficiency of pepsin, and is more easily recognized.
A Manual of Clinical Diagnosis | James Campbell Toddpepsin is rarely or never absent in the presence of free hydrochloric acid.
A Manual of Clinical Diagnosis | James Campbell ToddSince the two enzyms are almost invariably present or absent together, the test for rennin serves also as a test for pepsin.
A Manual of Clinical Diagnosis | James Campbell ToddIt will be noted that they now make no claim for pepsin, nor do they state that it contains iron in organic form.
British Dictionary definitions for pepsin
pepsine
/ (ˈpɛpsɪn) /
a proteolytic enzyme produced in the stomach in the inactive form pepsinogen, which, when activated by acid, splits proteins into peptones
Origin of pepsin
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for pepsin
[ pĕp′sĭn ]
Any of various digestive enzymes found in vertebrate animals that catalyze the hydrolysis of proteins to peptides.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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