extrasystole

[ ek-struh-sis-tuh-lee ]
/ ˌɛk strəˈsɪs tə li /
|

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 forms

ex·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. 2019

Examples from the Web for extrasystole

Medicine definitions for extrasystole

extrasystole

[ ĕk′strə-sĭstə-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.