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Synonyms

tachycardia

American  
[tak-i-kahr-dee-uh] / ˌtæk ɪˈkɑr di ə /

noun

Medicine/Medical.

  1. excessively rapid heartbeat.

tachycardia British  
/ ˌtækɪˈkɑːdɪˌæk, ˌtækɪˈkɑːdɪə /

noun

  1. pathol abnormally rapid beating of the heart, esp over 100 beats per minute Compare bradycardia

"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

Other Word Forms

Etymology

Origin of tachycardia

First recorded in 1885–90; tachy- + -cardia

Vocabulary lists containing tachycardia

"Against Nature," Vocabulary from the argument

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ardis has also claimed that people with A-fib can soak their feet in a tobacco leaf tea, and expect their condition, or other heart conditions like tachycardia, to disappear “forever.”

From Salon • Jan. 9, 2026

Others can develop something called POTS, which stands for postural orthostatic tachycardia syndrome, and can cause sharp spikes in the heart rate and dizziness.

From Los Angeles Times • May 25, 2024

The information from the watch confirmed Ceresnak's suspicion that Connor had supraventricular tachycardia.

From Science Daily • Dec. 13, 2023

Researchers will target a condition known as postural orthostatic tachycardia syndrome, or POTS, that is marked by irregular heartbeat, dizziness and fatigue.

From Washington Times • Jul. 31, 2023

The tachycardia will improve as the disease improves.

From Disturbances of the Heart by Osborne, Oliver T. (Oliver Thomas)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.