biological warfare
biological war·fare
noun \-ˈwȯr-ˌfa(ə)r, -ˌfe(ə)r\Definition of BIOLOGICAL WARFARE
: warfare involving the use of biological weapons; also : warfare involving the use of herbicides
Learn More About
Seen & Heard 
What made you want to look up biological warfare? Please tell us where you read or heard it (including the quote, if possible).
