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Definition of Mucus
1. Noun. Protective secretion of the mucus 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.
Generic synonyms: Secretion
Specialized synonyms: Phlegm, Sputum, Snot, Booger, Leucorrhea, Leukorrhea
Terms within: Mucin
Derivative terms: Mucous
Definition of Mucus
1. n. 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.
Definition of Mucus
1. a viscid bodily fluid [n -ES]
Medical Definition of Mucus
1. The free slime of the mucous membranes, composed of secretion of the glands, along with various inorganic salts, desquamated cells and leucocytes. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)