Why was clemency trending last week?


[myoo-kuh s] /ˈmyu kəs/
a viscous, slimy mixture of mucins, water, electrolytes, epithelial cells, and leukocytes that is secreted by glands lining the nasal, esophageal, and other body cavities and serves primarily to protect and lubricate surfaces.
Origin of mucus
1655-65; < Latin mūcus snot; akin to Greek myktḗr nose, mýxa slime
Can be confused
mucous, mucus. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for mucus
  • Drinking extra juice and water is supposed to replace fluids in the body lost to fever and to help break up mucus.
  • Actually, if you have a lot of mucus in your head sometimes this air doesn't come out.
  • Coughing helps your body get rid of mucus from your lungs.
  • Helminths could suppress immune disorders by promoting healthy mucus production in the intestine.
  • Tubes inside the lung become chronically inflamed, producing excess mucus.
  • The mucus itself might also being playing a role in the snails survival.
  • The mucus allows it to slip and slide until you cough it out of your lungs.
  • The mucus layer, which coats the stomach and duodenum, forms the first line of defense.
  • When cornered by ants on a leaf, the slug produces a protective sticky mucus.
  • In small or moderate doses, progesterone-only methods work by suppressing some ovulation, and by thickening cervical mucus.
British Dictionary definitions for mucus


the slimy protective secretion of the mucous membranes, consisting mainly of mucin
Word Origin
C17: from Latin: nasal secretions; compare mungere to blow the nose; related to Greek muxa mucus, muktēr nose
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for mucus

1660s (replacing Middle English mucilage), from Latin mucus "slime, mold, mucus of the nose, snot," from PIE root *meug- "slippery, slimy," with derivatives referring to wet or slimy substances or conditions (cf. Latin emungere "to sneeze out, blow one's nose," mucere "be moldy or musty," Greek myssesthai "to blow the nose," myxa "mucus," mykes "fungus," Sanskrit muncati "he releases"). Old English had horh, which may be imitative.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
mucus in Medicine

mucus mu·cus (myōō'kəs)
The viscous slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and that is secreted as a protective lubricant coating by the cells and glands of the mucous membranes.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
mucus in Science
The slimy, viscous substance secreted as a protective lubricant by mucous membranes. Mucus is composed chiefly of large glycoproteins called mucins and inorganic salts suspended in water.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
mucus in Culture

mucus definition

A slippery and somewhat sticky fluid secreted by the glands in mucous membranes. Mucus lubricates and protects the mucous membranes.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for mucus

All English speakers likely know this word

Word Value for mucus

Scrabble Words With Friends

Quotes with mucus

Nearby words for mucus