car·​dio·​ver·​sion | \ ˌkär-dē-ō-ˈvər-zhən How to pronounce cardioversion (audio) \

Definition of cardioversion

: application of an electric shock in order to restore normal heartbeat

Examples of cardioversion in a Sentence

Recent Examples on the Web His parents increasingly relied on electricity—cardioversion for his father’s unreliable heart, shock therapy for his mother’s brain, a wire for self-awareness. Thomas Mcguane, The New Yorker, 11 Oct. 2021 The condition can be treated with a procedure called electrical cardioversion to reset the heart rhythm. Aurelie Corinthios,, 29 Aug. 2019 The participants with atrial fibrillation wore the smartwatch before and after a treatment known as cardioversion, a non-emergency procedure that shocks the heart back into a normal rhythm temporarily. Catherine Ho, San Francisco Chronicle, 21 Mar. 2018 Researchers provided Apple Watches to about 50 patients with atrial fibrillation while undergoing procedures at UCSF known as cardioversions to restore normal heart rhythms. Peter Loftus, WSJ, 21 Mar. 2018 Treatment might involve medication, a pacemaker insertion, bed rest or a cardioversion, in which an electric jolt resets the heart’s rhythm. Tara Haelle, Washington Post, 4 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cardioversion.' 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 cardioversion

1963, in the meaning defined above

History and Etymology for cardioversion

cardi- + version (turning of an organ)

Learn More About cardioversion

Time Traveler for cardioversion

Time Traveler

The first known use of cardioversion was in 1963

See more words from the same year

Dictionary Entries Near cardioversion




See More Nearby Entries 

Statistics for cardioversion

Cite this Entry

“Cardioversion.” Dictionary, Merriam-Webster, Accessed 23 Jan. 2022.

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

More Definitions for cardioversion


car·​dio·​ver·​sion | \ -ˈvər-zhən also -shən \

Medical Definition of cardioversion

: application of an electric shock in order to restore normal heartbeat


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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