Definition of opportunistic adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌɒpətjuːˈnɪstɪk//
    ; NAmE NAmE//ˌɑːpərtuːˈnɪstɪk//
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  1. 1(disapproving) = opportunist
  2. 2 [only before noun] (medical) harmful to people whose immune system has been made weak by disease or drugs an opportunistic infection
See the Oxford Advanced American Dictionary entry: opportunistic

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