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extrasystole

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ex⋅tra⋅sys⋅to⋅le

  [ek-struh-sis-tuh-lee]
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–noun Pathology.
a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.
Also called premature beat, premature contraction.

Origin:
1895–1900; < NL; see extra-, systole

Related forms:
ex⋅tra⋅sys⋅tol⋅ic  [ek-struh-sis-tol-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Extrasystole
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Arrhythmia Information
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ex·tra·sys·to·le   (ěk'strə-sĭs'tə-lē)   
n.  A premature contraction of the heart, resulting in momentary cardiac arrhythmia.
ex'tra·sys·tol'ic (-sĭ-stŏl'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ex·tra·sys·to·le
Pronunciation: -'sis-t&-(")lE
Function: noun
: a prematurely occurring beat of one of thechambers of the heart that leads to momentary arrhythmia but leaves the fundamental rhythm unchanged called also premature beat —ex·tra·sys·tol·ic /-sis-'täl-ik/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

extrasystole ex·tra·sys·to·le (ěk'strə-sĭs'tə-lē)
n.
An ectopic, usually premature contraction of the heart, resulting in momentary cardiac arrhythmia. Also called premature systole.

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