noun Medicine/Medical.

excessively rapid heartbeat.

Origin of tachycardia

First recorded in 1885–90; tachy- + -cardia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for tachycardia

asystole, coronary

Examples from the Web for tachycardia

Historical Examples of tachycardia

  • Consequently the convulsions, tachycardia, and coma had to be ignored.


    Jesse Franklin Bone

  • I afterwards had periodical attacks of intermittence but never any tachycardia, at least none that lasted more than a few seconds.

  • But, as I rose, I suddenly felt acute pain along the sternum; at the same time began a strong crisis of tachycardia.

  • In tachycardia there is an irritation of the accelerator nerves to the heart, in brachycardia of the inhibitory nerves.


    James J. Walsh

  • Tachycardia is the name applied to a more or less permanent increase in the rate of the heart-beat.

British Dictionary definitions for tachycardia



pathol abnormally rapid beating of the heart, esp over 100 beats per minuteCompare bradycardia
Derived Formstachycardiac (ˌtækɪˈkɑːdɪˌæk), adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for tachycardia

1868, Modern Latin, coined 1867 by German-born physician Hermann Lebert (1813-1878) from tachy- "swift" + kardia "heart" (see cardiac).

Online Etymology Dictionary, © 2010 Douglas Harper

tachycardia in Medicine




A rapid heart rate, especially one above 100 beats per minute in an adult.tachyrhythmia
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.