1) Burning 2) Combustion 
==Damaging deflagration events== Damage to buildings, equipment and people can result from a large-scale, short-duration deflagration. The potential damage is primarily a function of the total amount of fuel burned in the event (total energy available), the maximum flame velocity that is achieved, and the manner in which the expansion of the combu...
An explosion with a propagation front traveling at subsonic speeds, as compared to supersonic detonation.
• (n.) The act or process of deflagrating. • (n.) A burning up; conflagration.
The sudden combustion of a gas, generally accompanied by a flame and a cracking sound. The speed of the flame is less than the speed of sound.
The extremely rapid burning of a material. This is much much faster than normal combustion, but slower than detonation.
The rapid combustion of a substance or material.
Vigorous burning with subsonic flame propagation. (See Detonation)
Def`la·gra'tion noun [ Latin deflagratio : confer French déflagration .] 1. A burning up; conflagration. 'Innumerable deluges and deflagrations .' Bp. Pearson. 2. (Chemistry) The act or process of deflagrating. 
deflagration 1. Combustion that propagates through a gas or along the surface of an explosive at a rapid rate driven by the transfer of heat. 2. A process of subsonic combustion that usually propagates through thermal conductivity (hot burning material heats the next layer of cold material and ignites it).
To cause a substance to burn rapidly, with flame. 
noun combustion that propagates through a gas or along the surface of an explosive at a rapid rate driven by the transfer of heat