py·rex·ia /paɪˈrɛksiə/
  發熱,熱病
  py·rex·ia /paɪˈrɛksɪə/ 名詞
  發熱
  Py·rex·i·a n.; pl. Pyrexiæ   Med. The febrile condition.
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  pyrexia
       n : a rise in the temperature of the body; frequently a symptom
           of infection [syn: fever, febrility, febricity, feverishness]