mucous membrane

noun

: a membrane rich in mucous glands
specifically : one that lines body cavities and passages (as of the gastrointestinal or respiratory tract) which communicate directly or indirectly with the outside of the body : mucosa
Pruritus and congestion involving mucous membranes of the eyes, nose, and mouth are frequently observed, and swelling of the lips or tongue may impair swallowing and ventilation. Bruce S. Bochner et al.

Examples of mucous membrane in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
It is linked to numerous conditions affecting the skin and mucous membranes of people and animals. Christophe Lavaysse, JSTOR Daily, 17 Apr. 2025 You’re Exposed to Tear Gas Tear gas is a thick, powdery fog that sticks to moisture like saliva, sweat, tears, and mucous membranes and causes an intense burning sensation. Louryn Strampe, Wired News, 9 Apr. 2025 Coffee stimulates the production of hydrochloric acid in the stomach, which, if not balanced by some food, can irritate the gastric mucous membranes. Veronica Cristino, Vogue, 30 Mar. 2025 Estrogen supports tissue hydration and collagen production, but during menopause, its decline can cause dryness in mucous membranes, including the ears. Mark Davis, Newsweek, 16 Mar. 2025 See All Example Sentences for mucous membrane

Word History

First Known Use

circa 1771, in the meaning defined above

Time Traveler
The first known use of mucous membrane was circa 1771

Browse Nearby Words

Cite this Entry

“Mucous membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucous%20membrane. Accessed 30 Apr. 2025.

Kids Definition

mucous membrane

noun
: a membrane rich in mucous glands
especially : one lining body passages and cavities (as of the nose or lungs) which connect directly or indirectly with the outside

Medical Definition

mucous membrane

noun
: a moist membranous layer rich in mucous glands that lines body passages and cavities (as of the digestive, respiratory, and genitourinary tracts) which connect directly or indirectly with the exterior, that functions in protection, support, nutrient absorption, and secretion of mucus, enzymes, and salts, and that is composed of epithelium supported below by the lamina propria and sometimes by the muscularis mucosae

called also mucosa

compare serous membrane

More from Merriam-Webster on mucous membrane

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!