0 a living substance, such as bacteria, used to intentionally cause damage or death to people, animals, or crops:
Even after polio is eradicated, vaccinations might still be needed to protect against use of manmade polio as a bioweapon.
Soon we may see early-warning devices that are set off by the presence of nerve gas or a bioweapon.
They signed a 1972 agreement to end bioweapon production.
The protocol will strengthen international norms against bioweapon development and use.
