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English definition of “refine”

refine

verb [T] uk   /rɪˈfaɪn/ us  
to make something pure or improve something, especially by removing unwanted material: Crude oil is industrially refined to purify it and separate out the different elements, such as benzene. C2 to improve an idea, method, system, etc. by making small changes: Engineers spent many months refining the software.
(Definition of refine from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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