Definition of dualism noun from the Oxford Advanced Learner's Dictionary

     

    dualism

     noun
    noun
    BrE BrE//ˈdjuːəlɪzəm//
     
    ; NAmE NAmE//ˈduːəlɪzəm//
     
    [uncountable]
     
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  1. 1(philosophy) the theory that there are two opposite principles in everything, for example good and evil
  2. 2(formal) the state of having two parts
  3. Word Origin late 18th cent.: from dual, on the pattern of French dualisme.
See the Oxford Advanced American Dictionary entry: dualism