What is the X in X-mas?
also bio-terrorism, by 1997, from bio- + terrorism. Related: Bioterrorist.
Terrorism that relies on spreading diseases, such as anthrax and smallpox.
The use of biological agents as weapons of terror. Anthrax bacteria are one such agent, while smallpox is considered one of the more likely lethal viruses that could serve as a weapon of bioterror. (See germ warfare.)