American English

Definition of discoloration noun from the Oxford Advanced American Dictionary

     

    discoloration

     noun
    (discolouration) noun
    NAmE//ˌdɪsˌkʌləˈreɪʃn//
     
     
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  1. 1[uncountable] the process of becoming discolored discoloration caused by the sun
  2. 2[countable] a place where something has become discolored He noticed a few small brown discolorations on his skin and made a doctor's appointment.
See the Oxford Advanced Learner's Dictionary entry: discoloration