Definitions for mean lethal dose
Dictionary of Military and Associated Terms
mean lethal dose
1. The amount of nuclear irradiation of the whole body which would be fatal to 50 percent of the exposed personnel in a given period of time. 2. The dose of chemical agent that would kill 50 percent of exposed, unprotected, and untreated personnel.
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"mean lethal dose." Definitions.net. STANDS4 LLC, 2013. Web. 22 May 2013. <http://www.definitions.net/definition/mean lethal dose>.