• synonyms


[myoo-koh-suh, -zuh]
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noun, plural mu·co·sae [myoo-koh-see, -zee] /myuˈkoʊ si, -zi/. Anatomy.
  1. mucous membrane.
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Origin of mucosa

1875–80; < New Latin, noun use of feminine of Latin mūcōsus mucous
Related formsmu·co·sal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

sheath, sheet, lamina, leaf, film, placenta, mucosa

Examples from the Web for mucosa

Historical Examples

  • Superficial erosions of the mucosa or even ulcers may be seen.

    Scurvy Past and Present

    Alfred Fabian Hess

  • When the flow ceases the mucosa or lining assumes its former state.


    E. B. Lowry

  • The action of croton oil is to render the mucosa very soft and friable.

  • Beyond the ileo-colic valve plate, in the short endgut, the mucosa again presents numerous pointed reduplications.

  • The embryos and larvæ of species of Cylicostomum are found in the mucosa of the large intestine.

    Special Report on Diseases of the Horse

    United States Department of Agriculture

British Dictionary definitions for mucosa


noun plural -sae (-siː)
  1. another word for mucous membrane
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Derived Formsmucosal, adjective

Word Origin

C19: New Latin, from Latin mūcōsus slimy
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

mucosa in Medicine


n. pl. mu•co•sas
  1. mucous membrane
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Related formsmu•cosal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.