What does the term "flashover" mean in firefighting?

The term "flashover" refers to the rapid spread of fire when all combustibles in a room or area ignite simultaneously. This phenomenon occurs due to the buildup of heat and flammable gases that accumulate in a confined space. When the temperature reaches a critical point, it can result in a sudden and intense ignition, leading to a fully involved fire and significantly increasing the danger for firefighters and occupants.

Understanding flashover is crucial for firefighting tactics and safety. Recognizing the signs that a flashover may occur can aid firefighters in making timely decisions to avoid being caught in a rapidly escalating situation. This knowledge helps in developing strategies for ventilation, positioning, and attack methods in accordance with the evolving fire dynamics.

The other options describe different aspects of fire behavior but do not accurately represent the specific and dangerous phenomenon that flashover entails.