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.
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How to use pepsin in a sentence
With this I succeeded in getting accurate comparisons between the digestive powers of various pepsins.
British Dictionary definitions for pepsin
a proteolytic enzyme produced in the stomach in the inactive form pepsinogen, which, when activated by acid, splits proteins into peptones
Collins 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
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.