extrasystole Hear it!

extrasystole definition

extra·sys·tole (-sis′tə lē′)

noun

a disturbance of heart rhythm resulting in an extra contraction of the heart between regular beats

Etymology: extra- + systole

Related Forms:

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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