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Definition of antioxidant noun from the Oxford Advanced American Dictionary

     

    antioxidant

     noun
    noun
    NAmE//ˌæntiˈɑksədənt//
     
    , NAmE//ˌæntaɪˈɑksədənt//
     
     
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  1. 1(biology) a substance such as vitamin C or E that removes dangerous molecules, etc., such as free radicals, from the body
  2. 2(chemistry) a substance that helps prevent oxidation, especially one used to help prevent stored food products from going bad
See antioxidant in the Oxford Advanced Learner's Dictionary
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