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.
Click for a side-by-side comparison of meanings. Use the word comparison feature to learn the differences between similar and commonly confused words.
- mucous, mucus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use mucus in a sentence
Those tears are mixtures of water, mucus, salt, proteins and fats.
By keeping your head above your neck and chest, but still in line with your spine, you can also relieve cold symptoms associated with mucus build-up or sinus pressure.
Researchers, including Max Teplitski, a scientist at the University of Florida, Gainesville, and his colleagues find that coral mucus seems to attract and cultivate a particular community of microbes.When Evolution Is Infectious - Issue 90: Something Green | Moises Velasquez-Manoff | September 30, 2020 | Nautilus
A drone already exists, for example, that can collect mucus from a whale and feasibly detect viruses like the coronavirus.Everything we know—and don’t know—about human-to-animal COVID transmission | jakemeth | September 4, 2020 | Fortune
It detects water flows inside the mucus clouds and lets researchers figure out the palace’s inner 3-D structure.Larvaceans’ underwater ‘snot palaces’ boast elaborate plumbing | Susan Milius | June 15, 2020 | Science News
It would be similar to smoking, only less…and you might get a chronic cough, or raise a little [mucus].
Plummer found the film so saccharine that he even developed a nickname for it: “The Sound of mucus.”Jim Carrey’s Rant Against ‘Kick-Ass 2’ and 13 Other Stars Who Hate Their Own Films | Marlow Stern | June 25, 2013 | THE DAILY BEAST
The announcer said brightly, “She is completely effaced right now, and she just lost her mucus plug.”
It is thinner than that of chronic bronchitis, and upon standing separates into three layers of pus, mucus, and frothy serum.
mucus is recognized from its characteristic slimy appearance when the fluid is poured from one vessel into another.
Stools composed almost wholly of mucus and streaked with blood are the rule in dysentery, ileocolitis, and intussusception.
When the mucus is small in amount and intimately mixed with the stool, the trouble is probably in the small intestine.
A sufficient amount of mucus or fecal matter will usually be brought away by it.
British Dictionary definitions for mucus
the slimy protective secretion of the mucous membranes, consisting mainly of mucin
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
Scientific definitions for mucus
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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for mucus
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.