[fahy-bruh-ley-shuh n, or especially for 2, fib-ruh-]
Origin of fibrillation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fibrillation
Even in periods of repose there is a certain amount of fibrillation on that side.
The common type of lesion is a dry arthritis with fibrillation and eburnation of the articular surfaces.
The myokymia of Kny and Schultze is characterised by fibrillation, pain, hyperidrosis, and changes in electrical excitability.
This fibrillation of mucus is regarded as the result of a coagulation of its mucin, previously held in solution by an alkali.
- 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
Word Origin and History for fibrillation
c.1840, noun of action from fibrillate.
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
- 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.