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clonic spasm

noun, Medicine/Medical
1.
See under spasm (def 1).
Origin
1840-1850
1840-50

spasm

[spaz-uh m] /ˈspæz əm/
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; Middle English spasme < Latin spasmus < Greek spasmós convulsion, derivative of spân to draw a sword or cord, wrench (off), convulse
Synonyms
2. fit, storm, flash, spurt.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for clonic spasm

spasm

/ˈspæzəm/
noun
1.
an involuntary muscular contraction, esp one resulting in cramp or convulsion
2.
a sudden burst of activity, emotion, etc
Word Origin
C14: from Latin spasmus, from Greek spasmos a cramp, from span to tear
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 clonic spasm
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, © 2010 Douglas Harper
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clonic spasm in Medicine

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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Word Value for clonic

10
14
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