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[kuh n-jes-chuh n] /kənˈdʒɛs tʃən/
overcrowding; clogging:
severe traffic congestion.
an excessive or abnormal accumulation of blood or other fluid in a body part or blood vessel:
pulmonary congestion.
Origin of congestion
1585-95; < Latin congestiō. See congest, -ion
Related forms
noncongestion, noun
precongestion, noun
supercongestion, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for congestion
Contemporary Examples
Historical Examples
  • All studious youths are aware of this tendency to congestion of the brain.

    The Growth of a Soul August Strindberg
  • People's faces grew red with congestion in the growing heat.

    His Masterpiece Emile Zola
  • The next morning, evacuation of these wounded was begun by ambulances as the congestion at Cheppy was somewhat relieved.

  • Do you want to be laid up with bronchitis or congestion of the lungs?

    Doctor Luttrell's First Patient Rosa Nouchette Carey
  • By relieving the congestion on the lines, they made possible the expansion of our output of munitions.

    Merchantmen-at-Arms David W. Bone
British Dictionary definitions for congestion


the state of being overcrowded, esp with with traffic or people
the state of being overloaded or clogged with blood
the state of being blocked with mucus
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
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Word Origin and History for congestion

early 15c., "action of gathering together," from Middle French congestion (14c.), from Latin congestionem (nominative congestio), noun of action from past participle stem of congerere (see congest). Medical sense is from 1630s; meaning "a crowding together of people, traffic, etc." is from 1883.

Online Etymology Dictionary, © 2010 Douglas Harper
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congestion in Medicine

congestion con·ges·tion (kən-jěs'chən)
The presence of an abnormal amount of fluid in a vessel or organ; especially excessive accumulation of blood, due either to increased afflux or to obstruction of return flow.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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congestion in Technology

When the offered load of a data communication path exceeds the capacity.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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