adj. & n.
adj. 1 (of a substance or device, esp. a bomb) designed to cause fires. 2 a of or relating to the malicious setting on fire of property. b guilty of this. 3 tending to stir up strife; inflammatory.
n. (pl. -ies) 1 an incendiary bomb or device. 2 an incendiary person. incendiarism n.
[ ME f. L incendiarius f. incendium conflagration f. incendere incens- set fire to ]