What is meant by 'flash point'?

The term 'flash point' refers specifically to the lowest temperature at which a flammable liquid produces enough vapor to ignite briefly when exposed to an open flame or spark. This characteristic is crucial for determining the fire hazard associated with various liquids, especially in construction and industrial environments. Understanding the flash point helps in implementing safety measures to prevent fires and manage risks associated with handling flammable materials.

The other options do not capture the specific definition of flash point. The boiling point relates to when a liquid turns into vapor completely, while evaporation pertains to the process of turning from liquid to vapor without focusing on ignition. The stability of a liquid at a temperature does not relate to how or when it might ignite, which is the essence of flash point.