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convulse

[kuh n-vuhls] /kənˈvʌls/
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
1635-1645
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
Related forms
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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British Dictionary definitions for un convulsed

convulse

/kənˈvʌls/
verb
1.
(transitive) to shake or agitate violently
2.
(transitive) to cause (muscles) to undergo violent spasms or contractions
3.
(informal) (intransitive) often foll by with. to shake or be overcome (with violent emotion, esp laughter)
4.
(transitive) to disrupt the normal running of (a country, etc): student riots have convulsed India
Derived Forms
convulsive, adjective
convulsively, adverb
convulsiveness, noun
Word Origin
C17: from Latin convulsus, from convellere to tear up, from vellere to pluck, pull
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for un convulsed

convulse

v.

1640s, transitive; 1680s, intransitive; from Latin convulsus, past participle of convellere (transitive only) "to pull away, to pull this way and that, wrench," hence "to weaken, overthrow, destroy" (see convulsion). Related: Convulsed (1630s); convulsing.

Online Etymology Dictionary, © 2010 Douglas Harper
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un convulsed in Medicine

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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