fibrillation
[ fahy-bruh-ley-shuhn, or, especially for 2, fib-ruh- ]
/ ˌfaɪ brəˈleɪ ʃən, or, especially for 2, ˌfɪb rə- /
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noun
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Origin of fibrillation
First recorded in 1830–40; fibrillate + -ion
Words nearby fibrillation
fibrillar, fibrillary contractions, fibrillary tremor, fibrillate, fibrillated, fibrillation, fibrilliform, fibrillogenesis, fibrin, fibrinase, fibrin calculus
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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British Dictionary definitions for fibrillation
fibrillation
/ (ˌfaɪbrɪˈleɪʃən, ˌfɪb-) /
noun
a local and uncontrollable twitching of muscle fibres, esp of the heart, not affecting the entire muscle. Atrial fibrillation results in rapid and irregular heart and pulse rate. In ventricular fibrillation, the heart stops beating
irregular twitchings of the muscular wall of the heart, often interfering with the normal rhythmic contractions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for fibrillation
fibrillation
[ fĭb′rə-lā′shən, fī′brə- ]
n.
Fine, rapid twitching of individual muscle fibers with little or no movement of the muscle as a whole.
The formation of fibrils.
Vermicular twitching, usually slow, of individual muscular fibers, commonly occurring in the atria or ventricles of the heart and in recently denervated skeletal muscle fibers.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for fibrillation
fibrillation
[ fĭb′rə-lā′shən ]
A rapid twitching of muscle fibers, as of the heart, that is caused by the abnormal discharge of electrical nerve impulses. Ventricular fibrillation is life-threatening.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.