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 ep·i·dem·ic /ˌɛpəˈdɛmɪk/
 傳染病,流行病(a.)流行的,傳染性的

 ep·i·dem·ic /-ɪkəl/ 形容詞
 流行(性)的,猖獗的,流行病,流行,流行,流行性的

 Ep·i·dem·ic Ep·i·dem·ic·al a.
 1. Med. Common to, or affecting at the same time, a large number in a community; -- applied to a disease which, spreading widely, attacks many persons at the same time; as, an epidemic disease; an epidemic catarrh, fever, etc.  See Endemic.
 2. Spreading widely, or generally prevailing; affecting great numbers, as an epidemic does; as, epidemic rage; an epidemic evil.
    It was the epidemical sin of the nation.   --Bp. Burnet.
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 Ep·i·dem·ic n.
 1. Med. An epidemic disease.
 2. Anything which takes possession of the minds of people as an epidemic does of their bodies; as, an epidemic of terror.
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 epidemic
      adj : (especially of medicine) of disease or anything resembling a
            disease; attacking or affecting many individuals in a
            community or a population simultaneously; "an epidemic
            outbreak of influenza" [ant: endemic, ecdemic]
      n : a widespread outbreak of an infectious disease; many people
          are infected at the same time