• synonyms


[dee-fahy-bruh-ley-ter, -fib-ruh-]
See more synonyms for defibrillator on Thesaurus.com
noun Medicine/Medical.
  1. an agent or device for arresting fibrillation of the atrial or ventricular muscles of the heart.
Show More

Origin of defibrillator

First recorded in 1955–60; de- + fibrill(ation) + -ator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for defibrillator


  1. med an apparatus for stopping fibrillation of the heart by application of an electric current to the chest wall or directly to the heart
Show More
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 defibrillator


1956, agent noun from defibrillation.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

defibrillator in Medicine


(dē-fĭbrə-lā′tər, -fībrə-)
  1. An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.