Definition of untreated adjective from the Oxford Advanced American Dictionary

     

    untreated

     adjective
    adjective
    NAmE//ʌnˈtrit̮əd//
     
     
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  1. 1not receiving medical treatment If untreated, the illness can become severe.
  2. 2(of substances) not made safe by chemical or other treatment untreated sewage
  3. 3(of wood) not treated with substances to preserve it
See the Oxford Advanced Learner's Dictionary entry: untreated