Compare with flash point. Minimum temperature at which the vapor/air mixture over a liquid spontaneously catches fire.
The temperature at which combustible materials ignite spontaneously in air.
the temperature of spontaneous ignition of a product in the absence of a flame, determined under standardized conditions
Minimum temperature at which the vapour/air mixture over a liquid spontaneously catches fire. i.e. without the application of a flame or spark. See also: Flash Point.