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convulsion

[kuh n-vuhl-shuh n] /kənˈvʌl ʃən/
noun
1.
contortion of the body caused by violent, involuntary muscular contractions of the extremities, trunk, and head.
2.
violent agitation or disturbance; commotion.
3.
an outburst of great, uncontrollable laughter.
Origin
1575-1585
1575-85; < Latin convulsiōn- (stem of convulsiō). See convulse, -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for convulsions
  • Fortunately, she was in a clinic, where the doctor guessed immediately that she was in the grip of malarial convulsions.
  • The sedative medications ward off convulsions and brain damage.
  • Foreign donors sometimes bring food and tablets to treat convulsions.
  • It attacks the brain, causing agitation, terror and convulsions.
  • While shooting video, however, movement is so blurred that you appear to be having convulsions every time you nod your head.
  • Tetanus is a disease that causes severe muscular contractions and convulsions.
  • Amid the political convulsions that rippled westwards, he became a revolutionary socialist.
  • But even underground testing left craters and seismic convulsions.
  • Types of seizures vary from staring episodes or eye blinks to sudden falls or convulsions.
  • When the oil runs out and foreign buyers stop buying gilts, the country is in for some huge convulsions.
British Dictionary definitions for convulsions

convulsion

/kənˈvʌlʃən/
noun
1.
a violent involuntary contraction of a muscle or muscles
2.
a violent upheaval, disturbance, or agitation, esp a social one
3.
(usually pl) (informal) uncontrollable laughter: I was in convulsions
Derived Forms
convulsionary, adjective
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 convulsions

convulsion

n.

1580s, from Latin convulsionem (nominative convulsio), noun of action from past participle stem of convellere "to tear loose," from com- "together" (see com-) + vellere "to pluck, pull violently."

Online Etymology Dictionary, © 2010 Douglas Harper
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convulsions in Medicine

convulsion con·vul·sion (kən-vŭl'shən)
n.
An intense, paroxysmal, involuntary muscular contraction.

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

convulsion definition


A severe, often violent involuntary contraction of the muscles. Convulsions may be caused by high fevers or poisoning and often accompany such diseases such as epilepsy.

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 Article for convulsions

convulsion

condition characterized by violent, uncontrolled spasmodic contractions and relaxations of the voluntary muscles. Convulsions may be a symptom resulting from various conditions and diseases, such as epilepsy, uremia, eclampsia, rabies, tetanus, strychnine poisoning, and cerebral tumour. They are usually accompanied by loss of consciousness. During a convulsion the individual's clothing should be loosened around the neck, the head should be cushioned with a pillow, and any sharp or hard objects should be removed from the area. An object should never be inserted into the person's mouth during a convulsion. Medical treatment should be sought immediately after the convulsion ceases.

Learn more about convulsion with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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