Lewis Short
(adjective) : incendĭārĭus, a, um, id.
* Causing a conflagration, setting on fire, fire-.
* Adj.: avis,fire-bird,Plin. 10, 13, 17, § 36: oleum,Veg. Mil. 4, 8; 18: tela,Amm. 20, 11.
* Subst.: incendĭārĭus, ii, m., an incendiary, Tac. A. 15, 67; Suet. Vit. 17: incendiarii, qui consulto incendium inferunt,Paul. Sent. 5, 3, 6.
Charlton T. Lewis, Charles Short, A Latin Dictionary