Word.ws English Dictionary

fibrillation

/ˌfɪbɹɪˈleɪʃən/

fibrillation noun: the rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart.

Noun

fibrillation (countable and uncountable, plural fibrillations)

  1. The rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart.
    • Though occasionally a “flatliner” can be revived with a defib, it is most commonly used to change the uncoordinated contractions of the heart (fibrillation) into a normal sinus rhythm—that is, to defibrillate the heart.2011, Laurence Street, Introduction to Biomedical Engineering Technology, page 125
    • The most common type of irregular heartbeat is atrial fibrillation or AFib. It is estimated that between three and six million people in the United States have AFib.2024 February 13, “Understanding Your Heart Rate”, in Emory Healthcare

fibrillation meaning in Tamil and Malay

fibrillation in Tamil

சிறு நார்ச் சுருக்கம், உதறல், குறுநடுக்கம்

fibrillation in Malay

contraction of the muscle fibers of the heart
pemfibrilan

Forms of fibrillation

pluralfibrillations

Origin of fibrillation

From fibrilla + -ation.

Words formed from fibrillation

Questions about fibrillation

What does fibrillation mean?
Fibrillation means the rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart.
What is fibrillation in Tamil?
Fibrillation in Tamil is சிறு நார்ச் சுருக்கம், உதறல், குறுநடுக்கம். See Fibrillation meaning in Tamil.
What part of speech is fibrillation?
Fibrillation is a noun.
How do you pronounce fibrillation?
Fibrillation is pronounced /ˌfɪbɹɪˈleɪʃən/.
What is the plural of fibrillation?
The plural of fibrillation is fibrillations.

Words near fibrillation in the dictionary

  1. fibrillary
  2. fibrillate
  3. fibrillated
  4. fibrillates
  5. fibrillating
  6. fibrillation
  7. fibrillations
  8. fibrillative
  9. fibrillatory
  10. fibrilled
  11. fibrilliary

Source and license

Adapted from Wiktionary: fibrillation (page history and authors); fibrillation (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-fibrillation.wav.

Cite this entry: “fibrillation.” Word.ws, https://word.ws/fibrillation. Based on Wiktionary, CC BY-SA 4.0.