Definition of transformer noun from the Oxford Advanced Learner's Dictionary

 

transformer

 noun
noun
BrE BrE//trænsˈfɔːmə(r)//
 
; NAmE NAmE//trænsˈfɔːrmər//
 
Electronics
 
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a device for reducing or increasing the voltage of an electric power supply, usually to allow a particular piece of electrical equipment to be used See related entries: Electronics
See the Oxford Advanced American Dictionary entry: transformer