A high explosive is characterized by the extreme rapidity with which its decomposition occurs; this action is known as detonation.

When initiated by a blow or shock, it decomposes almost instantaneously, either in a manner similar to an extremely rapid combustion or with rupture and rearrangement of the molecules themselves.

High explosives are used as bursting charges for bombs, projectiles, grenades, mines, and for demolition. An explosive that is capable of detonating when unconfined.