tachy·​car·​dia | \ ˌta-ki-ˈkär-dē-ə How to pronounce tachycardia (audio) \

Definition of tachycardia

: relatively rapid heart action whether physiological (as after exercise) or pathological — compare bradycardia

Examples of tachycardia in a Sentence

Recent Examples on the Web She has been diagnosed with POTS, post orthostatic tachycardia syndrome, which has caused heart problems. cleveland, 2 June 2021 Duntz wondered if perhaps these long-COVID patients, so many of whom suffered from dizziness and tachycardia, were also breathing shallowly, because of either lung inflammation even in mild cases or viral damage to the vagus nerve. Meghan O'rourke, The Atlantic, 8 Mar. 2021 Griffith noticed a commotion in the Connersville press area, where Mawbey had collapsed due to a heart condition called tachycardia. IndyStar, 2 Mar. 2021 Some, such as phantom smells, are mysterious, while others are debilitating and include migraines, tachycardia, and intense neuropathy in her hands. Joanne Mcneil, Vulture, 12 Feb. 2021 Many develop an inability to stand without dizziness, known as postural orthostatic tachycardia syndrome. Alexander Zaitchik, The New Republic, 2 Feb. 2021 The good news, experts say, is there are protocols and treatments for POTS, which stands for postural orthostatic tachycardia syndrome. Sumathi Reddy, WSJ, 30 Nov. 2020 Both girls now have a host of problems, including postural orthostatic tachycardia syndrome, which causes a person's heart rate to shoot up upon standing and lead to dizziness or fainting. Ryan Prior, CNN, 12 Oct. 2020 The official name for my new heart troubles, as I’ve recently been diagnosed, is postural orthostatic tachycardia syndrome, or POTS. Deborah Copaken, The Atlantic, 4 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tachycardia.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of tachycardia

1889, in the meaning defined above

History and Etymology for tachycardia

New Latin

Keep scrolling for more

Learn More About tachycardia

Time Traveler for tachycardia

Time Traveler

The first known use of tachycardia was in 1889

See more words from the same year

Statistics for tachycardia

Last Updated

6 Jun 2021

Cite this Entry

“Tachycardia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachycardia. Accessed 22 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for tachycardia


tachy·​car·​dia | \ ˌtak-i-ˈkärd-ē-ə How to pronounce tachycardia (audio) \

Medical Definition of tachycardia

: 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


Test Your Vocabulary

Return of Name that Color!

  • a light greenish blue color
  • Name that color:
True or False

Test your knowledge - and maybe learn something along the way.

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!