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English definition of “pre-empt”

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pre-empt

verb [T]
 
 
/ˌpriːˈempt/
to do something before something else happens in order to prevent it or reduce its effectPreventing and impedingLimiting and restricting
pre-emptive adjective preventing something else from happening: to take pre-emptive action Preventing and impedingLimiting and restricting
(Definition of pre-empt from the Cambridge Learners Dictionary © Cambridge University Press)
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