—adj. 1. used or adapted for setting property on fire: incendiary bombs. 2. of or pertaining to the criminal setting on fire of property.
3. tending to arouse strife, sedition, etc.; inflammatory: incendiary speeches. 4. tending to inflame the senses: an incendiary extravaganza of music and dance.
—n. 1. a person who deliberately sets fire to buildings or other property, as an arsonist.
2. Mil.a shell, bomb, or grenade containing napalm, thermite, or some other substance that burns with an intense heat.
3. a person who stirs up strife, sedition, etc.; an agitator.