weaponize

/ˈwɛpənaɪz/

Etymology

From weapon + -ize. First use appears c. 1938. See cite below.

verb

To make into a weapon.“Anything can be weaponized. A big enough rock, dropped from a sufficient height, is a very good weapon.”
To make more effective as a weapon.“To weaponize anthrax it is made more distributable, not more virulent.”