| Mucus (mucus) |
|---|
| n. | (m "k s) |
|---|
| Mu"cus |
| [L.
mucus, muccus; cf. mucere to be moldy or musty,
Gr. my`xa mucus, and Skr. muc to release. Cf.
Match for striking fire, Moist, Mucilage.] |
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.
Any other animal fluid
of a viscid quality, as the synovial fluid, which lubricates the
cavities of the joints; -- improperly so used.
A gelatinous or slimy
substance found in certain algæ and other plants.
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In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 