nos·o·co·mi·al /ˌnɑsəˈkomiəl/
  nos·o·co·mi·al /ˌnɑsəˈkomɪəl/ 形容詞
  Nos·o·co·mi·al a.
  1. Of or pertaining to a hospital; as, nosocomial atmosphere.
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  nosocomial
       adj : taking place or originating in a hospital; "nosocomial
             infection"