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Definition of catalytic converter noun from the Oxford Advanced American Dictionary

 

catalytic converter

 noun
noun
NAmE//ˌkæt̮l̩ɪt̮ɪk kənˈvərt̮ər//
 
 
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a device used in the exhaust system of vehicles to reduce the damage caused to the environment
See the Oxford Advanced Learner's Dictionary entry: catalytic converter