de·​fi·​bril·​la·​tor | \ (ˌ)dē-ˈfi-brə-ˌlā-tər \

Definition of defibrillator

: an electronic device that applies an electric shock to restore the rhythm of a fibrillating heart

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Other Words from defibrillator

defibrillate \ -​ˌlāt \ transitive verb
defibrillation \ -​ˌfi-​brə-​ˈlā-​shən \ noun

Examples of defibrillator in a Sentence

Recent Examples on the Web

Such things as ambulances, emergency defibrillators and walkie-talkies are all relatively new creations. Erin Blakemore, Washington Post, "Emergency medical response is relatively new, but it has its own museum," 10 June 2018 There was also damage to vending machines, display cases, and an emergency defibrillator, according to officials. Danny Mcdonald,, "In Arlington, 14 students accused of vandalism that includes swastika, anti-gay slurs at high school," 9 May 2018 Another update expected to be approved soon is the purchase of two new AED (automatic external defibrillator) units. John Benson,, "Seven Hills planning updates for 15-year-old Recreation Center," 15 May 2018 Maryland has taken an active role in training and providing kits alongside those portable defibrillators in schools and office and government buildings, said Dr. Richard Alcorta, the state EMS medical director. Meredith Cohn,, "Training can help people stop bleeding from traumatic injuries, experts say," 21 Apr. 2018 Meanwhile, the anonymous passenger says, a flight attendant rushed to get a defibrillator from the front of the plane to help the woman. Char Adams,, "Southwest Passengers Describe How 'Hero' Flight Crew Jumped 'Into Action' After Engine Explosion," 20 Apr. 2018 And of those that were correctly classified, nearly half were not arrhythmic — involving an irregular heartbeat — meaning that defibrillators or CPR would not have saved the person, the study found. Kimberly Veklerov,, "Deaths often misclassified as cardiac arrest, UCSF study finds," 18 June 2018 And in Reno, drones will deliver defibrillators and other medical equipment. Eoin O'carroll, The Christian Science Monitor, "Explained: A US pilot program for unmanned aircraft," 4 June 2018 During the flight, the crew responded to a medical emergency on board and used all available equipment, including an AED defibrillator, to help the passenger, according to Jonathan Guerin, a United Airlines spokesman. John Hilliard,, "Passenger dies on United flight headed to Boston," 27 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'defibrillator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of defibrillator

1952, in the meaning defined above

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Last Updated

12 Feb 2019

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Time Traveler for defibrillator

The first known use of defibrillator was in 1952

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English Language Learners Definition of defibrillator

medical : a device that gives an electric shock to a person's heart in order to make it beat normally again especially after a heart attack


de·​fi·​bril·​la·​tor | \ (ˈ)dē-ˈfib-rə-ˌlāt-ər , -ˈfīb- \

Medical Definition of defibrillator

: an electronic device used to defibrillate a heart by applying an electric shock to it

More from Merriam-Webster on defibrillator

Nglish: Translation of defibrillator for Spanish Speakers

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