A material that is capable of sustaining a reaction front that moves through the unreached material at a speed equal to or greater than that of sound in the medium (typically 3300 ft/sec (1000 m/sec); a material capable of sustaining a detonation. (See also Detonation.)
An explosive with a rapid burning rate. On detonation, a high explosive will have a shattering effect on objects in the immediate area. TNT, RDX, nitroglycerin, dynamite, pentaerythritoltetranitrate, and various plastic explosives are types of high explosives.