biological weapon

noun

: a harmful living thing (such as a germ that causes disease) used as a weapon in a war

Full Definition of BIOLOGICAL WEAPON

: a harmful biological agent (as a pathogenic microorganism or a neurotoxin) used as a weapon to cause death or disease usually on a large scale

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1947

Medical Dictionary

noun biological weap·on \-ˈwep-ən\

: a harmful biological agent (as a pathogenic microorganism or a neurotoxin) used as a weapon to cause death or disease usually on a large scale

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