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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 mu·cus /ˈmjukəs/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 mu·cus /ˈmjukəs/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Mu·cus n.
 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 algae and other plants.

From: WordNet (r) 2.0

      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 [syn: mucous secretion]