incendiary

Concise Oxford English Dictionary © 2008 Oxford University Press:
incendiary /ɪnˈsɛndɪəri/

▶adjective

• 1 (of a device or attack) designed to cause fires.

• 2 tending to stir up conflict or excitement.

▶noun (pl. incendiaries) an incendiary bomb or device.

– derivatives
incendiarism noun.

– origin ME: from L. incendiarius, from incendium ‘conflagration’, from incendere ‘set fire to’.