Backdraft

Noun

 * 1)  An extreme fire behavior phenomena involving ignition of products of combustion (such as carbon monoxide) and pyrolysis products upon introduction of oxygen to a compartment. In this phenomena the fuel generally is at a high temperature (above 600 degrees C), but combustion is limited by a lack of oxygen. Introduction of atmospheric oxygen results in explosive combustion. Backdraft is often incorrectly referred to as a smoke explosion which is a completely different extreme fire behavior phenomenon.