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premature beat

noun, Medicine/Medical

extrasystole

[ek-struh-sis-tuh-lee] /ˌɛk strəˈsɪs tə li/
noun, Pathology
1.
a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat.
Also called premature beat, premature contraction.
Origin
1895-1900
1895-1900; < Neo-Latin; see extra-, systole
Related forms
extrasystolic
[ek-struh-sis-tol-ik] /ˌɛk strə sɪsˈtɒl ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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premature-beat in Medicine

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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