Gunpowder

[guhn-pou-der]

  • An explosive mixture, as of potassium nitrate, sulfur, and charcoal,used in shells and cartridges, in fireworks, for blasting, etc.
  • Chemical substances of various compositions, particle sizes, shapes and colors that, on ignition, serve as a propellant. Ignited smokeless powder emits minimal quantities of smoke from a gun's muzzle; the older black-powder emits relatively large quantities of whitish smoke.