[ 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.

Nearby words

  1. mucigel,
  2. mucigen,
  3. mucigenous,
  4. mucilage,
  5. mucilaginous,
  6. mucinase,
  7. mucinemia,
  8. mucinogen,
  9. mucinoid,
  10. mucinosis

Origin of mucin

First recorded in 1825–35; muc- + -in2

Related formsmu·cin·oid, adjectivemu·ci·nous [myoo-suh-nuh s] /ˈmyu sə nəs/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for mucinoid


/ (ˈmjuːsɪn) /


biochem any of a group of nitrogenous mucoproteins occurring in saliva, skin, tendon, etc, that produce a very viscous solution in water
Derived Formsmucinous, adjective

Word Origin for mucin

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

Medicine definitions for mucinoid


[ myōōsə-noid′ ]


Resembling mucin.


[ myōōsĭn ]


Any of a group of glycoproteins found especially in the secretions of mucous membranes.
Related formsmucin•ous adj.

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