The existing paired shuttle boosters, once ignited, cannot be controlled.
An explosive is anything that, once ignited, burns extremely rapidly and produces a large amount of hot gas in the process.
Since powders have a very high surface area, they can combust with explosive force once ignited.
Cracks in the propellant could cause catastrophic failure once ignited.
Central elements of Orden are a constructed spell so, once ignited, it runs through established routines.
The roof of the building ignited all at once, explosively engulfing the entire sleeping house in sparks and flames.
The regiment was like a firework that, once ignited, proceeds superior to circumstances until its blazing vitality fades.
Like magnesium and titanium, the metal would burn with gusto, and, once ignited, was the very devil to extinguish.
And once ignited, the clothes themselves are sufficient fuel to continue to burn, unlike skin with its high water content.
Reminds me of a supernova I ignited once.