What does the term "flash point" refer to in the context of flammable substances?

The term "flash point" refers to the minimum temperature at which a substance produces sufficient flammable vapors that can ignite in the presence of an ignition source. It is a critical safety measure in handling and storing flammable materials because it indicates the lowest temperature at which the material can form a vapor-air mixture that is capable of burning. Understanding the flash point is essential for ensuring safe practices in environments where flammable substances are used, transported, or stored, as it helps to establish safe temperature limits and protocols to prevent fires or explosions. This definition is fundamental in the context of safety regulations and hazard assessments involving flammable liquids.