Defibrillator meaning

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.
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An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.
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(medicine) An electronic device used internally or externally that delivers a controlled electric shock to a patient to correct ventricular fibrillation, a lack of coordination of the contraction of muscle tissue of the large chambers of the heart.
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Origin of defibrillator

From defibrillation +"Ž -ator.