Wiktionary
n. The lowest temperature at which combustion will occur spontaneously under specific conditions.
Usage examples of "ignition temperature".
Maybe this close to Mars they got too cold, chilled below their ignition temperature.
And on the very verge of success, at the moment of its greatest triumph, the critical mass it had brought together and fanned to ignition temperature had been smashed, scattered like glowing gravel across the countryside by the most destructive force man has unleashed in the last two millennia: bureaucracy.
Sapless wood tried to sustain ignition temperature against the cold and snow.
The air inside them, heated in moments to a point far above the ignition temperature of organic material, fed furiously upon furniture, rugs, drapes, and whatever else had been left in place.