Definitions for: Mucus


[n] protective secretion of the mucous membranes; in the gut it lubricates the passage of food and protects the epithelial cells; in the nose and throat and lungs it can make it difficult for bacteria to penetrate the body through the epithelium



Webster (1913) Definition: Mu"cus, n. [L. mucus, muccus; cf. mucere 8be moldy or
musty, Gr. ? mucus, and Skr. muc to release. Cf. Match for
striking fire, Moist, Mucilage.]
1. (Physiol.) A viscid fluid secreted by mucous membranes,
which it serves to moisten and protect. It covers the
lining membranes of all the cavities which open
externally, such as those of the mouth, nose, lungs,
intestinal canal, urinary passages, etc.

2. (Physiol.) Any other animal fluid of a viscid quality, as
the synovial fluid, which lubricates the cavities of the
joints; -- improperly so used.

3. (Bot.) A gelatinous or slimy substance found in certain
alg[ae] and other plants.

Synonyms: mucous secretion

See Also: booger, leucorrhea, leukorrhea, mucin, phlegm, secretion, snot, sputum

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