Meaning of “supersede” in the English Dictionary

"supersede" in American English

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supersedeverb [ 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The state law was superseded by the federal Family and Medical Leave Act.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)

"supersede" in Business English

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supersedeverb [ T ]

uk /ˌsuːpəˈsiːd/ us

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be superseded by sth It is important to ascertain that the documents in your possession have not been superseded by new laws.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The internet seems to have superseded every mode of communication ever invented!
be superseded by sth Phones using 2.5G technology were superseded by third-generation (3G) phones.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” from the Cambridge Business English Dictionary © Cambridge University Press)