Definition of refractory adjective from the Oxford Advanced American Dictionary

     

    refractory

     adjective
    adjective
    NAmE//rɪˈfræktəri//
     
     
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  1. 1(formal) (of a person) difficult to control; behaving badly
  2. 2(medical) (of a disease or medical condition) difficult to treat or cure
See the Oxford Advanced Learner's Dictionary entry: refractory