Trinitrotoluene, or TNT is an explosive substance that was commonly used in the First and Second World Wars. TNT, in its pure form, is a yellowish solid. TNT saw a variety of applications, from bombs, to shells, to simple blocks of explosive place to demolish a target. The explosive has a detonation velocity of 6900 meters per second. While the terms "TNT" and "dynamite are often used interchangeably, they are, in fact, two very different explosives.