de·con·ges·tant

[dee-kuhn-jes-tuhnt] Pharmacology.
adjective
1.
of or pertaining to a substance that relieves mucus congestion of the upper respiratory tract.
noun
2.
any such substance.

Origin:
1945–50; de- + congest + -ant

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To decongestant
Collins
World English Dictionary
decongestant (ˌdiːkənˈdʒɛstənt) [Click for IPA pronunciation guide]
 
adj
1.  relieving congestion, esp nasal congestion
 
n
2.  a decongestant drug

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
00:10
Decongestant is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a stew of meat, vegetables, potatoes, etc.
Etymonline
Word Origin & History

decongestant
1950, from de- + congestant (see congest).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

decongestant de·con·ges·tant (dē'kən-jěs'tənt)
n.
A medication or treatment that breaks up congestion, as that of the sinuses, by reducing swelling. adj.
Capable of relieving congestion.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
decongestant   (dē'kən-jěs'tənt)  Pronunciation Key 
A medication that reduces congestion of the nose or sinuses, usually by causing vasoconstriction.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Britannica
Encyclopedia

decongestant

any drug used to relieve swelling of the nasal mucosa accompanying such conditions as the common cold and hay fever. When administered in nasal sprays or drops or in devices for inhalation, decongestants shrink the mucous membranes lining the nasal cavity by contracting the muscles of blood vessel walls, thus reducing blood flow to the inflamed areas. The constricting action chiefly affects the smallest arteries, the arterioles, although capillaries, veins, and larger arteries respond to some degree

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

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Example sentences
They do not relieve symptoms of congestion, which require a second drug, a decongestant.
However, decongestant nasal sprays should only be used for short periods of time, or they can make congestion worse.
For example, decongestant drops and sprays may be effective in reducing congestion for a few days.
It is generally made by cooking ammonia, lithium and pseudoephedrine, a decongestant.
Copyright © 2013 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT