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English definition of “refining”

refining

noun [U]
 
 
/rɪˈfaɪnɪŋ/ PRODUCTION
the process of making different products from a basic product, usually oil or sugar: oil/gas refining Zambia is among the top five nations in terms of reserves, refining capacity, and production of copper.
(Definition of refining from the Cambridge Business English Dictionary © Cambridge University Press)
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