convulse

[kuhn-vuhls]
verb (used with object), convulsed, convulsing.
1.
to shake violently; agitate.
2.
to cause to shake violently with laughter, anger, pain, etc.
3.
to cause to suffer violent, spasmodic contractions of the muscles.

Origin:
1635–45; < Latin convulsus past participle of convellere to shatter, tear loose, equivalent to con- con- + vul- (variant stem of vellere to pull, tear) + -sus, variant of -tus past participle suffix

convulsedly, adverb
convulsible, adjective
convulsibility, noun
unconvulsed, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
convulse (kənˈvʌls)
 
vb (often foll by with)
1.  (tr) to shake or agitate violently
2.  (tr) to cause (muscles) to undergo violent spasms or contractions
3.  informal to shake or be overcome (with violent emotion, esp laughter)
4.  (tr) to disrupt the normal running of (a country, etc): student riots have convulsed India
 
[C17: from Latin convulsus, from convellere to tear up, from vellere to pluck, pull]
 
con'vulsive
 
adj
 
con'vulsively
 
adv
 
con'vulsiveness
 
n

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Etymonline
Word Origin & History

convulse
1640s, trans.; 1680s, intrans.; from L. convuls-, pp. stem of convellere (trans. only) "to pull away, to pull this way and that, wrench," hence "to weaken, overthrow, destroy" (see convulsion). Related: Convulsed (1630s); convulsing (1829).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

convulse con·vulse (kən-vŭls')
v. con·vulsed, con·vuls·ing, con·vuls·es
To affect with irregular and involuntary muscular contractions; throw into convulsions.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The patient starts to twitch and involuntarily the tongue starts to twitch, and
  then the whole body starts to convulse.
To be sure, fabric can't talk or cause a scandal or convulse the blogosphere.
It causes the human digestive tract to convulse causing major diarrhoea.
Some animals will chew rapidly, salivate, and convulse.
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