mucosa

noun

mu·​co·​sa myü-ˈkō-zə How to pronounce mucosa (audio)
plural mucosae myü-ˈkō-(ˌ)zē How to pronounce mucosa (audio)
-ˌzī
or mucosas
: 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 : mucous membrane
… to maximize the absorptive area of the epithelium, the mucosa of the small intestine is remodeled into an intricate array of finger or leaf-like protrusions, known as villi, which extend into the lumen. Benjamin D. Simons
Inhibition of neuraminidase prevents inactivation of influenza virus by respiratory mucus and likely facilitates infection of the airway mucosa. Frederick G. Hayden et al.
mucosal adjective

Examples of mucosa in a Sentence

Recent Examples on the Web But the vaccines don’t induce secretory IgA because the cells that make secretory IgA are really lining the mucosa. Steven Strogatz, Quanta Magazine, 5 Apr. 2023 Upon maturation, the adult hookworm latches onto the mucosa of the small intestine and begin to blood-suck. Rebecca Kreston, Discover Magazine, 25 Apr. 2011 This second, inside skin is called the mucosa. William A. Haseltine, Forbes, 25 Mar. 2022 That IgG can move from the blood across the mucosa. Steven Strogatz, Quanta Magazine, 5 Apr. 2023 Once in the gut, the larvae shed their proteinaceous coats upon exposure to the stomach acids and migrate to the mucosa of the bowels to mature into adults. Rebecca Kreston, Discover Magazine, 25 Dec. 2016 The research team then studied whether spraying a type of healthy bacteria called Roseomonas mucosa onto a person's skin would reduce eczema flares. Erika Edwards, NBC News, 26 Mar. 2023 Research has suggested that iron erodes the mucosa of the gastrointestinal (GI) tract. Amanda Gardner, Health, 6 Mar. 2023 Surgical treatment of a fungus ball consists in opening the infected sinus cavity at the level of its ostium and removing fungal concretions while sparing the normal mucosa. Seriously Science, Discover Magazine, 9 Jan. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mucosa.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, from Latin, feminine of mucosus mucous

First Known Use

1859, in the meaning defined above

Time Traveler
The first known use of mucosa was in 1859

Dictionary Entries Near mucosa

Cite this Entry

“Mucosa.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucosa. Accessed 20 Jul. 2024.

Medical Definition

mucosa

noun
mu·​co·​sa myü-ˈkō-zə How to pronounce mucosa (audio)
plural mucosae -(ˌ)zē How to pronounce mucosa (audio) -ˌzī How to pronounce mucosa (audio) or mucosas
: a membrane 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 : mucous membrane
mucosal adjective

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