Thesaurus: mucus

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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.
2. n. Any other animal fluid of a viscid quality, as the synovial fluid, which lubricates the cavities of the joints; -- improperly so used.
3. n. A gelatinous or slimy substance found in certain algae and other plants.
4. 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
5. 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 algæ and other plants.
6. A viscid fluid secreted by mucous membranes, which it serves tomoisten and protect. It covers the lining membranes of all thecavities which open externally, such as those of the mouth, nose,lungs, intestinal canal, urinary passages, etc.
7. n:100 n. 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