tachycardia Hear it!

tachycardia definition

tachy·car·dia (tak′i kär′dē ə)

noun

an abnormally fast heartbeat

Etymology: ModL < Gr tachys (see tachy-) + kardia, heart

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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