Main Entry: ¹in·cen·di·ary

Pronunciation: \in-ˈsen-dē-ˌer-ē; -ˈsen-də-rē, -dyə-\

Function: noun

Inflected Form(s): plural in·cen·di·ar·ies

Etymology: Middle English, from Latin incendiarius, from incendium conflagration, from incendere

Date: 15th century

1 a : a person who commits arson : arsonist b : an incendiary agent (as a bomb)
2 : a person who excites factions, quarrels, or sedition : agitator