ground zero

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See also: ground-zero and Ground Zero

English[edit]

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Wikipedia

Nagasaki, Japan before and after atomic bombing in 1945

Alternative forms[edit]

Noun[edit]

ground zero ‎(plural ground zeroes)

  1. the point on the land or water surface below, above, or at which an atomic or nuclear bomb detonates
  2. (by extension) the location of any disaster
  3. (figuratively) the very beginning or elementary start of something

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