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extrasystole

[ek-struh-sis-tuh-lee]
noun Pathology.
  1. a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.
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Origin of extrasystole

From New Latin, dating back to 1895–1900; see origin at extra-, systole
Also called premature beat, premature contraction.
Related formsex·tra·sys·tol·ic [ek-struh-sis-tol-ik] /ˌɛk strə sɪsˈtɒl ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for extrasystole

Historical Examples

  • The extrasystole may have its origin in either the auricle or the ventricle.

    Arteriosclerosis and Hypertension:

    Louis Marshall Warfield

  • Whenever there is a dropped beat or an intermittent pulse one may be sure that it is the result of an extrasystole.

    Arteriosclerosis and Hypertension:

    Louis Marshall Warfield

  • Provided there is no evidence of gross myocardial lesion, the extrasystole itself is of no great significance.

    Arteriosclerosis and Hypertension:

    Louis Marshall Warfield

extrasystole in Medicine

extrasystole

(ĕk′strə-sĭs′tə-lē)
n.
  1. An ectopic, usually premature contraction of one of the chambers of the heart, resulting in momentary cardiac arrhythmia.premature systole
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.