[in.cen.di.ary] n, pl -ar.ies [ME, fr. L incendiarius, fr. incendium conflagration, fr. incendere] (15c) 1 a: a person who deliberately sets fire to a building or other property b: an incendiary agent (as a bomb)
2: a person who excites factions, quarrels, or sedition: agitator
[2]incendiary adj (15c) 1: of, relating to, or involving a deliberate burning of property
2: tending to excite or inflame: inflammatory "~ speeches" 3 a: igniting combustible materials spontaneously b: of, relating to, or being a weapon (as a bomb) designed to start fires