Ignition of several individual fires throughout an area, either simultaneously or in rapid succession, and so spaced that they add to and influence the main body of the fire to produce a hot, fast-spr [..]

The setting of a number of individual fires throughout an area, either simultaneously or in quick succession, and so spaced that they soon coalesce, influence, and support each other to produce a hot, fast-spreading fire throughout the area. Allumage de zone