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English definition of “establish”

establish

verb [T] (DISCOVER)    /ɪˈstæb.lɪʃ/ formal
C2 to discover or get proof of something: Before we take any action we must establish the facts/truth. [+ question word] Can you establish what time she left home/whether she has left home. [+ (that)] We have established (that) she was born in 1900.Proving and disproving
(Definition of establish verb (DISCOVER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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