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单词 opportunistic
释义

WordReference Random House Learner's Dictionary of American English © 2024
op•por•tun•is•tic /ˌɑpɚtuˈnɪstɪk, -tyu-/USA pronunciation   adj. 
  1. following a policy of opportunism.
  2. (of a disease or infection) caused by an organism that flourishes only in certain circumstances, as when the body is already weakened by another condition.
See -port-.
WordReference Random House Unabridged Dictionary of American English © 2024
op•por•tun•is•tic  (op′ər to̅o̅ nis′tik, -tyo̅o̅-),USA pronunciation adj. 
  1. Pathologyadhering to a policy of opportunism;
    practicing opportunism.
  2. Pathology
    • (of a microorganism) causing disease only under certain conditions, as when a person's immune system is impaired.
    • Pathology(of a disease or infection) caused by such an organism:Pneumocystis pneumonia is an opportunistic disease that often strikes victims of AIDS.
  • opportunist + -ic 1890–95
op′por•tun•is′ti•cal•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::
opportunistic /ˌɒpətjʊˈnɪstɪk/ adj
  1. of or characterized by opportunism
  2. (of an infection) caused by any microorganism that is harmless to a healthy person but debilitates a person whose immune system has been weakened by disease or drug treatment
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