extrasystole

[ek-struh-sis-tuh-lee]

noun Pathology.

a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.

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 of extrasystole

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.

An ectopic, usually premature contraction of one of the chambers of the heart, resulting in momentary cardiac arrhythmia.premature systole

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