Dictionary

biological weapon

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

First Known Use of BIOLOGICAL WEAPON

1947

biological weapon

noun biological weap·on \-ˈwep-ən\   (Medical Dictionary)

Medical 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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