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English definition of “supersede”

supersede

verb [T]     /ˌsuːpəˈsiːd/
if a law , rule , agreement , etc. supersedes another, it replaces it: The newly signed deal supersedes the current contract and runs to the end of 2012.be superseded by sth It is important to ascertain that the documents in your possession have not been superseded by new laws . supersede a law/regulation/sb's authority If the Bill is passed , it will supersede the Fed's authority .
if a process , system , or product supersedes another, it replaces it because it is more modern or becomes more popular : The internet seems to have superseded every mode of communication ever invented !be superseded by sth Phones using 2.5G technology were superseded by third-generation (3G) phones .
(Definition of supersede verb from the Cambridge Business English Dictionary © Cambridge University Press)
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