mucus

Meanings

1. 1
   noun

   a slippery secretion produced by mucous membranes and some other biological surfaces for protection or lubrication

   The frog blew air and mucus from its mouth to make a floating nest of froth.

A learned borrowing from Latin mucus, 'nasal mucus.' It partly displaced native English slime in technical use and gave rise to the adjective mucous, which describes a membrane or its secretion.

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