adjective, noun, plural -ar⋅ies.| 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. |
| 5. | a person who deliberately sets fire to buildings or other property, as an arsonist. |
| 6. | Military. a shell, bomb, or grenade containing napalm, thermite, or some other substance that burns with an intense heat. |
| 7. | a person who stirs up strife, sedition, etc.; an agitator. |