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clonic spasm

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clonic spasm

–noun Medicine/Medical.
See under spasm (def. 1).

Origin:
1840–50

spasm

[spaz-uhm]
–noun
1. Pathology. a sudden, abnormal, involuntary muscular contraction, consisting of a continued muscular contraction (tonic spasm) or of a series of alternating muscular contractions and relaxations (clonic spasm).
2. any sudden, brief spell of great energy, activity, feeling, etc.

Origin:
1350–1400; ME spasme < L spasmus < Gk spasmós convulsion, deriv. of spân to draw a sword or cord, wrench (off), convulse


2. fit, storm, flash, spurt.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

spasm 
c.1400, from O.Fr. spasme, from L. spasmus "a spasm," from Gk. spasmos "a spasm, convulsion," from span "draw up, tear away, contract violently, pull," from PIE *spe- "stretch." Fig. sense of "a sudden convulsion" (of emotion, politics, etc.) is attested from 1817. The verb is recorded from 1900.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: spasm
Pronunciation: 'spaz-&m
Function: noun
1 : an involuntary and abnormal contraction of muscle or muscle fibers or of a holloworgan (as an artery, the colon, or the esophagus) that consists largely of involuntary muscle fibers
2 : the state or condition of a muscle or organ affected with spasms spasm>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

clonic spasm n.
Alternate involuntary contraction and relaxation of a muscle.

spasm (spāz'əm)
n.

  1. A sudden involuntary contraction of a muscle or group of muscles.

  2. A muscle spasm.

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