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Definition of high-octane adjective from the Oxford Advanced American Dictionary

     

    high-octane

     adjective
    adjective
     
    [only before noun]
     
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  1. 1(of fuel used in engines) of very good quality and very efficient
  2. 2(informal) full of energy; powerful a high-octane athlete
See high-octane in the Oxford Advanced Learner's Dictionary
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