Nearby Words

mucus

[myoo-kuhs] Example Sentences Origin

mu·cus

[myoo-kuhs]
noun
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:
1655–65; < Latin mūcus snot; akin to Greek myktḗr nose, mýxa slime

mucous, mucus.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Mucus is always a great word to know.
So is lollapalooza. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Example Sentences
  • Some people argue blowing your nose reverses the flow of mucus into the sinuses and slows drainage.
  • The mucus inside the male elephant's trunk helps deliver a concentrated whiff of the seductive scent.
  • Nasal mucus has growth factors that, when increased in numbers, can lead to production of new smell receptors and.
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Collins
World English Dictionary
mucus (ˈmjuːkəs)
 
n
the slimy protective secretion of the mucous membranes, consisting mainly of mucin
 

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

mucus
1660s, from L. mucus "slime, mold, snot," from PIE base *(s)meug- "to slip, slippery, slime" (cf. L. emungere "to sneeze out, blow one's nose," mucere "be moldy or musty," Gk. myssesthai "to blow the nose," myxa "mucus," mykes "fungus," Skt. muncati "he releases"). Replaced O.E. horh, which may be imitative.
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Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

mucus mu·cus (my&oomacr;'kəs)
n.
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.
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American Heritage
Science Dictionary
mucus   (my'kəs)  Pronunciation Key 
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.
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American Heritage
Cultural Dictionary

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.
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Encyclopedia Britannica
Encyclopedia

mucus

viscous fluid that moistens, lubricates, and protects many of the passages of the digestive and respiratory tracts in the body. Mucus is composed of water, epithelial (surface) cells, dead leukocytes, mucin, and inorganic salts. Mucus is produced by mucous cells, which are frequently clustered into small glands located on the mucous membrane that lines virtually the entire digestive tract. Large numbers of mucous cells occur in the mouth, where mucus is used both to moisten food and to keep the oral membranes moist while they are in direct contact with the air. Mucus in the nose helps to trap dust, bacteria, and other small inhaled particles. The stomach also has large numbers of mucous cells. Gastric mucus forms a layer about one millimetre thick that lines the stomach, protecting the organ from highly acidic gastric juice and preventing the juice from digesting the stomach itself.

Learn more about mucus with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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