A burning liquid that is pouring over the edge of a container is known as a ________ fire.

The term that best fits a burning liquid pouring over the edge of a container is a three-dimensional fire. This classification arises from the fact that the burning liquid, typically classified as a Class B fire involving flammable liquids, can affect the fire's behavior beyond just the surface area of the liquid itself.

In a three-dimensional fire scenario, the flames and heat are not confined to the two-dimensional area of the liquid's surface. Instead, the fire can spread upward, affect the surrounding environment, and pose risks from the fire transitioning into the gaseous phase, creating additional hazards. This behavior illustrates the potential for fire to involve volume and space in a vertical manner, showcasing the dynamics and complexities of fire in three dimensions.

This differs from a two-dimensional fire, which primarily involves a flat surface area, and can make different scenarios like flaming and smoldering fires distinct, as those terms describe the state of combustion rather than the dimensional nature of the fire.