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[myoo-sin] /ˈmyu sɪn/
noun, Biochemistry.
any of a class of glycoproteins found in saliva, gastric juice, etc., that form viscous solutions and act as lubricants or protectants on external and internal surfaces of the body.
Origin of mucin
First recorded in 1825-35; muc- + -in2
Related forms
mucinoid, adjective
[myoo-suh-nuh s] /ˈmyu sə nəs/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for mucin


(biochem) any of a group of nitrogenous mucoproteins occurring in saliva, skin, tendon, etc, that produce a very viscous solution in water
Derived Forms
mucinous, adjective
Word Origin
C19: via French from Latin mucus
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
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mucin in Medicine

mucin mu·cin (myōō'sĭn)
Any of a group of glycoproteins found especially in the secretions of mucous membranes.

mu'cin·ous adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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