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

 

emulator

 noun
noun
BrE BrE//ˈemjuleɪtə(r)//
 
; NAmE NAmE//ˈemjuleɪtər//
 
(computing)
 
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a device or piece of software that makes it possible to use programs, etc. on one type of computer even though they have been designed for a different type
See the Oxford Advanced American Dictionary entry: emulator