tachycardia

noun

tachy·​car·​dia ˌta-ki-ˈkär-dē-ə How to pronounce tachycardia (audio)
: relatively rapid heart action whether physiological (as after exercise) or pathological compare bradycardia

Examples of tachycardia in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Days later, the man was hospitalized with fever and tachycardia (an abnormally fast heart rate). — Tyler Freel, Outdoor Life, 4 Mar. 2026 In 2022, Brendon was rushed to the hospital for tachycardia, a condition that makes the heart beat abnormally fast. — Kierra Frazier, CBS News, 21 Mar. 2026 Ventricular tachycardia is a super-fast heartbeat triggered when an electrical wave short-circuits in the organ’s bottom chambers, the ventricles, and prevents them from pumping blood out to the body. — ABC News, 1 Apr. 2026 Porzingis, who said last year he had been diagnosed with postural orthostatic tachycardia syndrome, missed two weeks shortly after the trade with a mysterious illness that was never publicly identified. — Joseph Dycus, Mercury News, 29 June 2026 See All Example Sentences for tachycardia

Word History

Etymology

New Latin

First Known Use

1889, in the meaning defined above

Time Traveler
The first known use of tachycardia was in 1889

Rhymes for tachycardia

See All Rhymes for tachycardia

Browse Nearby Words

tachyauxesis
tachycardia
tachygenesis
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Cite this Entry

“Tachycardia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachycardia. Accessed 7 Jul. 2026.

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Medical Definition

tachycardia

noun
tachy·​car·​dia ˌtak-i-ˈkärd-ē-ə How to pronounce tachycardia (audio)
: relatively rapid heart action whether physiological (as after exercise) or pathological see junctional tachycardia, paroxysmal tachycardia, sinus tachycardia, ventricular tachycardia compare bradycardia

More from Merriam-Webster on tachycardia

Britannica.com: Encyclopedia article about tachycardia

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