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

Definition of mucosa

: 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.

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Other Words from mucosa

mucosal \ myü-​ˈkō-​zəl How to pronounce mucosa (audio) \ adjective

Examples of mucosa in a Sentence

Recent Examples on the Web Another animal study further demonstrated the important role of the mucosa in preventing infection. Daniel P. Oran, Scientific American, "To Beat COVID, We May Need a Good Shot in the Nose," 1 Mar. 2021 The trials have so far analyzed only blood, but testing for antibodies in mucosa would confirm that the antibodies can travel to the nose and mouth. New York Times, "vaccinated people will need to wear masks," 8 Dec. 2020 During an interview on Instagram Live with ABC News Chief Medical Correspondent Jennifer Ashton, MD, Fauci explained that people have mucosa (moist tissue) in the nose, mouth, and eyes. Claire Gillespie,, "Should You Wear Goggles to Protect Against Coronavirus? Here's What Experts Told Us," 31 July 2020 Another challenge regards one of the ways SARS-CoV-2 enters the body: through the nasal mucosa. William A. Haseltine, Scientific American, "Lessons for COVID-19 from the Early Days of AIDS," 6 July 2020 That is present not only in the lungs, but in other cells as well, including those in the intestine and in the nasal mucosa, which lines the nasal cavity. William Petri, The Conversation, "The puzzling questions of the coronavirus: A doctor addresses 6 questions that are stumping physicians," 6 May 2020 Thus, one probiotic strain can have effects on more than one organ system (in this example NCC2461, on gut and nasal mucosa and skin), and different probiotics can affect the same organ while using different effector pathways. Enea Rezzonico, Scientific American, "Nestlé's research on nutrition and the human gut microbiome," 17 Feb. 2015 Some scientists think that Lemierre syndrome may develop when bacteria invades a person’s mucosa, which is the membrane that lines various parts of the body, GARD says. Korin Miller, SELF, "A 23-Year-Old College Student Died From Lemierre Syndrome, a Rare Infection She Thought Was Tonsillitis," 6 Nov. 2018 The detergent can get on the skin or mucosa (inner lining of mouth). Brittney Mcnamara, Teen Vogue, "What Eating Tide Pods Does to Your Body," 18 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mucosa.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mucosa

1859, in the meaning defined above

History and Etymology for mucosa

New Latin, from Latin, feminine of mucosus mucous

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Cite this Entry

“Mucosa.” Dictionary, Merriam-Webster, Accessed 8 May. 2021.

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More Definitions for mucosa


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

Medical Definition of mucosa

: 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

Other Words from mucosa

mucosal \ -​zəl How to pronounce mucosa (audio) \ adjective

More from Merriam-Webster on mucosa Encyclopedia article about mucosa

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