单词	biothreat
释义	biothreat noun bio·​threat ¦bī-(ˌ)ō-¦thret  plural biothreats : a threat posed by a harmful biological agent In 2001, a $3 million contract … funded research to develop vaccines against biothreats by activating and targeting dendritic cells. Robert Miller, Dallas Morning News, 28 Oct. 2007 Gingrich and Sanders conclude that biothreats are four times as dangerous as nuclear and chemical threats combined. Norman G. Anderson, Seattle Post-Intelligencer, 27 Feb. 2005 Biothreat protection requires the mask to have an airtight seal around your nose and mouth, and, sometimes, your eyes. Consumer Reports, February 2002 Word History Etymology bi- entry 2 + threat First Known Use 1984, in the meaning defined above
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