supersede - definition in the American English Dictionary - Cambridge Dictionaries Online

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supersede

verb [T]  us   /ˌsu·pərˈsid/
to replace something older, less effective, or less important or official: Wireless broadband could supersede satellite radio one day. The state law was superseded by the federal Family and Medical Leave Act.
(Definition of supersede from the Cambridge Academic Content Dictionary © Cambridge University Press)
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