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mucus Syllabification: mu·cus
Pronunciation: /ˈmyo͞okəs/

Definition of mucus in English:


1A slimy substance, typically not miscible with water, secreted by mucous membranes and glands for lubrication, protection, etc.
Example sentences
  • The conjunctiva contains thousands of cells that produce mucus and tiny glands that produce tears.
  • It is spread by contact with the saliva or mucus of an infected person.
  • Physiotherapy helps clear the thick, sticky mucus from the lungs.
1.1A gummy substance found in plants; mucilage.
Example sentences
  • The tube feet, arranged in groups of three on the pinnules, are coated with mucus that ensnares the prey.
  • This plant secretes mucus from a stalk.
  • Mucus produced by the plant provides temporary and effective protection from petroleum damage.


Mid 17th century: from Latin.

Words that rhyme with mucus

fucus, Lucas, mucous, Ophiuchus, soukous
Definition of mucus in:
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