|flash point or flashing point|
|1.||the lowest temperature at which the vapour above a liquid can be ignited in air|
|2.||a critical moment beyond which a situation will inevitably erupt into violence: the political mood has reached flash point|
|flashing point or flashing point|
For a given flammable substance, the lowest temperature at which vapors passing from the substance into the air will catch fire spontaneously if a small flame is present.