the thick, slimy secretion of the mucous membranes, that moistens and protects them
Origin of mucusL: see meek, muck
The viscous, slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and is secreted as a protective lubricant coating by cells and glands of the mucous membranes.
Origin of mucusLatin mūcus
- (physiology) A slippery secretion from the lining of the mucous membranes.
Borrowed from Latin mÅ«cus.