mucus Meaning and Definition
1. 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
In vertebrates, mucus (/mjuːkəs/ MYOO-kəss; adjectival form: "mucous") is a slippery secretion produced by, and covering, mucous membranes.
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