Definition of refine verb from the Oxford Advanced Learner's Dictionary

      

    refine

     verb
    verb
    BrE BrE//rɪˈfaɪn//
     
    ; NAmE NAmE//rɪˈfaɪn//
     
    Verb Forms present simple I / you / we / they refine
    BrE BrE//rɪˈfaɪn//
     
    ; NAmE NAmE//rɪˈfaɪn//
     
    he / she / it refines
    BrE BrE//rɪˈfaɪnz//
     
    ; NAmE NAmE//rɪˈfaɪnz//
     
    past simple refined
    BrE BrE//rɪˈfaɪnd//
     
    ; NAmE NAmE//rɪˈfaɪnd//
     
    past participle refined
    BrE BrE//rɪˈfaɪnd//
     
    ; NAmE NAmE//rɪˈfaɪnd//
     
    -ing form refining
    BrE BrE//rɪˈfaɪnɪŋ//
     
    ; NAmE NAmE//rɪˈfaɪnɪŋ//
     
    The power industry
     
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  1. 1refine something to make a substance pure by taking other substances out of it the process of refining oil/sugar See related entries: The power industry
  2. 2refine something to improve something by making small changes to it She has refined her playing technique over the years. This theory still needs a little refining.
  3. Word Origin late 16th cent.: from re- ‘again’ + the verb fine ‘make or become thinner’, influenced by French raffiner.Extra examples The information system is constantly refined and updated. supplies of the highly refined white sugar China has eight factories that refine the ore. In those days sugar was refined by boiling it in huge black iron vats. Our methods have been gradually refined over the years. The process of refining oil produces several useful chemicals. The theory was further refined by modern scientists. They would constantly refine their designs until they were almost perfect.
See the Oxford Advanced American Dictionary entry: refine