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

Winter air is also less humid, which helps viruses stay viable in the air for longer periods, and cold air can dry out the mucous membranes in the nose and throat, which weakens their ability to trap and expel viruses. —Justin Gest, Newsweek, 20 Jan. 2025

Additionally, vaccines with similar technology show that antibodies can migrate: For instance, with Moderna’s Covid-19 vaccine, antibodies are shown to move to the mucous membranes in the nose (another norovirus infection site). —Alex Knapp, Forbes, 14 Jan. 2025

The attack causes inflammation (swelling) of the mucous membranes. —Anna Giorgi, Verywell Health, 15 Oct. 2024

Even high concentrations of hydrogen peroxide can harm a pet’s skin, mucous membranes, and gastrointestinal tracts. —Nafeesah Allen, Better Homes & Gardens, 9 Jan. 2025

Word History

First Known Use

circa 1771, in the meaning defined above

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