incendiary:1

adjective
in*cen*di*ary \ in-ˈsen-dē-ˌer-ē \ -ˈsen-də-rē \ -dyə- \
15th century{ds||3||}
  • igniting combustible materials spontaneously
  • of, relating to, or being a weapon (such as a bomb) designed to start fires
  • tending to excite or inflame : inflammatory

incendiary:2

noun
incendiary \
15th century{ds||2|b|}
  • a person who excites factions, quarrels, or sedition : agitator
  • a substance or weapon (such as a bomb) used to start fires
  • a person who commits arson : arsonist
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