[ dee-fahy-bruh-leyt, -fib-ruh- ]
/ diˈfaɪ brəˌleɪt, -ˈfɪb rə- /

verb (used with object), de·fi·bril·lat·ed, de·fi·bril·lat·ing. Medicine/Medical.

to arrest the fibrillation of (heart muscle) by applying electric shock across the chest, thus depolarizing the heart cells and allowing normal rhythm to return.

Origin of defibrillate

1930–35; de- + fibrillate, back formation from fibrillation

OTHER WORDS FROM defibrillate

de·fi·bril·la·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for defibrillation

/ (dɪˌfaɪbrɪˈleɪʃən, -fɪb-) /


med the application of an electric current to the heart to restore normal rhythmic contractions after the onset of atrial or ventricular fibrillation
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

Medicine definitions for defibrillation

[ dē-fĭb′rə-lāshən, -fī′brə- ]


The stopping of fibrillation of the heart muscle and the restoration of normal contractions using drugs or electric shock.

Other words from defibrillation

de•fibril•late′ v.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for defibrillation

[ dē-fĭb′rə-lāshən ]

Termination of fibrillation of the heart muscle and restoration of normal heart rhythm, especially by one or more electric shocks administered by paddles applied to the chest.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.