Definition of defibrillator noun from the Oxford Advanced American Dictionary

 

defibrillator

 noun
noun
NAmE//diˈfɪbrəˌleɪt̮ər//
 
(medical)
 
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a piece of equipment used to control the movements of the heart muscles by giving the heart a controlled electric shock
See the Oxford Advanced Learner's Dictionary entry: defibrillator