percussion cap definition

  • noun:
    • A thin steel cap containing an explosive compound, including fulminate of mercury, that explodes on being struck.
    • a metal cap entirely on muzzleloading firearms that contains substances particularly fulminate that explode upon effect
    • a tiny copper cap or cup, containing fulminating dust, and used with a percussion lock to explode gunpowder.
    • a tiny copper limit or cup containing fulminating dust, found in a percussion-lock to explode gunpowder.
    • a detonator that explodes whenever hit

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