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[dee-fahy-bruh-ley-ter, -fib-ruh-] /diˈfaɪ brəˌleɪ tər, -ˈfɪb rə-/
noun, Medicine/Medical
an agent or device for arresting fibrillation of the atrial or ventricular muscles of the heart.
Origin of defibrillator
1955-60; de- + fibrill(ation) + -ator Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for defibrillator
  • What you really need is a good defibrillator by your side.
  • In fact, moments after collapsing, the ref had his heart restarted by an automated external defibrillator.
  • He wants access to the data being collected inside his body by an implanted cardiac defibrillator.
  • They act as an instant defibrillator in the event of arrhythmia.
  • Implantable cardioverter defibrillator has been shown to be beneficial.
British Dictionary definitions for defibrillator


/dɪˈfaɪbrɪˌleɪtə; -ˈfɪb-/
(med) an apparatus for stopping fibrillation of the heart by application of an electric current to the chest wall or directly to the heart
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
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Word Origin and History for defibrillator

1956, agent noun from defibrillation.

Online Etymology Dictionary, © 2010 Douglas Harper
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defibrillator in Medicine

defibrillator de·fib·ril·la·tor (dē-fĭb'rə-lā'tər, -fī'brə-)
An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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