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• n  a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)

• atom bomb
• atomic bomb
• A-bomb
• fission bomb

News & Articles

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• North Korea nuclear test still shrouded in mystery
  By Fredrik Dahl VIENNA (Reuters) - The outside world may never find out what type of fissile material North Korea used in its nuclear test four months ago, leaving a key question about the explosion unanswered, officials and experts said on Tuesday. The isolated northeast Asian state is believed to have tested plutonium bombs in two previous such blasts, in 2006 and 2009. Any switch to uranium ...
  June 18, 2013 - Reuters via Yahoo! News