ground zero

Definitions of ground zero
  1. noun
    the target of a projectile (as a bomb or missile)
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    type of:
    target, target area
    the location of the target that is to be hit
  2. noun
    the point of detonation (or above or below) of a nuclear weapon
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    type of:
    the precise location of something; a spatially limited location
  3. noun
    the site of the World Trade Center before it was destroyed
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    example of:
    land site, site
    the piece of land on which something is located (or is to be located)
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