† inˈcendious,a.Obs. [ad. L. incendiōs-us, f.incendium: see -ous.] = incendiary a. Hence † incendiouslyadv. (Webster, 1856). 1823J. D. Hunter Captivity N. Amer. 5 The massacre of my parents and connections,..and the incendious destruction of their dwellings.