bio·haz·ard /ˈbaɪoˌhæzɚ/
  bio·haz·ard /ˈbaɪoˌhæzɝd, ˈhæz-/ 名詞
  biohazard
       n 1: hazard to humans or the environment resulting from
            biological agents or conditions
       2: any bacterium or virus or toxin that could be used in
          biological warfare [syn: biological agent]