<p><strong>Adjective</strong></p><ul><li>used or adapted for setting property on fire: incendiary bombs.</li><li>of or relating to the criminal setting on fire of property.</li><li>tending to arouse strife, sedition, etc.; inflammatory: incendiary speeches.</li><li>tending to inflame the senses: an incendiary extravaganza of music and dance.</li></ul><p><strong>Noun</strong></p><ul><li>(plural: incendiaries) a person who deliberately sets fire to buildings or other property, as an arsonist.</li><li>Military: a shell, bomb, or grenade containing napalm, thermite, or some other substance that burns with an intense heat.</li><li>a person who stirs up strife, sedition, etc.; an agitator.</li></ul>