- an agent or device for arresting fibrillation of the atrial or ventricular muscles of the heart.
Origin of defibrillator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- med an apparatus for stopping fibrillation of the heart by application of an electric current to the chest wall or directly to the heart
Word Origin and History for defibrillator
1956, agent noun from defibrillation.
Online Etymology Dictionary, © 2010 Douglas Harper
- An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.