fibrillation

noun
fi·​bril·​la·​tion | \ ˌfi-brə-ˈlā-shən How to pronounce fibrillation (audio) , ˌfī- \

Definition of fibrillation

1 : an act or process of forming fibers or fibrils
2a : a muscular twitching involving individual muscle fibers acting without coordination
b : very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse

Examples of fibrillation in a Sentence

Recent Examples on the Web In that report, O'Connor said that since 2003, Biden has had episodes of atrial fibrillation, a type of irregular heartbeat that's potentially serious but treatable. Arkansas Online, 20 Nov. 2021 In that report, O’Connor said that since 2003, Biden has had episodes of atrial fibrillation, a type of irregular heartbeat that’s potentially serious but treatable. Zeke Miller, chicagotribune.com, 19 Nov. 2021 In that report, O’Connor said that since 2003, Biden has had episodes of atrial fibrillation, a type of irregular heartbeat that’s potentially serious but treatable. BostonGlobe.com, 19 Nov. 2021 Still, people needn’t have any prior heart issues to develop atrial fibrillation or other heart rhythm disturbances. Dr. Keith Roach, oregonlive, 25 Oct. 2021 In 2017, the Apple Heart Study set out to determine whether the Apple Watch could detect irregular heart rhythms (arrhythmias), including those caused by atrial fibrillation, a serious heart condition. Yasmin Tayag, Fortune, 30 Sep. 2021 The study, which Intermountain announced in a news release Wednesday, found that COVID-19 patients with a history of atrial fibrillation — the most common form of heart arrhythmia — are more likely to need hospitalization. Sean P. Means, The Salt Lake Tribune, 17 Nov. 2021 People with the condition usually need to limit their activity and may develop other health complications over time like atrial fibrillation, blood clots, stroke, and heart failure. Korin Miller, Health.com, 29 Sep. 2021 Piazzolla’s Le Grand Tango remixed produced the irregular rhythms of atrial fibrillation. Grace Leslie, Scientific American, 18 Sep. 2021

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

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First Known Use of fibrillation

1845, in the meaning defined at sense 1

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Time Traveler for fibrillation

Time Traveler

The first known use of fibrillation was in 1845

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Dictionary Entries Near fibrillation

fibrillate

fibrillation

fibrilled

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Statistics for fibrillation

Last Updated

14 Dec 2021

Cite this Entry

“Fibrillation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibrillation. Accessed 21 Jan. 2022.

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More Definitions for fibrillation

fibrillation

noun
fi·​bril·​la·​tion | \ ˌfib-rə-ˈlā-shən How to pronounce fibrillation (audio) , ˌfīb- How to pronounce fibrillation (audio) \

Medical Definition of fibrillation

1 : an act or process of forming fibers or fibrils
2a : a muscular twitching involving individual muscle fibers acting without coordination
b : very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse — see atrial fibrillation, ventricular fibrillation

More from Merriam-Webster on fibrillation

Nglish: Translation of fibrillation for Spanish Speakers

Britannica English: Translation of fibrillation for Arabic Speakers

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