1. 〔原子爆弾〕an atom(ic) bomb; an A-bomb
  1. 原爆犠牲者an A-bomb victim
  1. 原爆記念日the anniversary of the atomic bombing of 「Hiroshima (August 6) [Nagasaki (August 9)]
  1. 原爆実験((conduct)) an atomic [A-bomb] test
  1. 原爆症an A-bomb disease; illnesses caused by atomic-bomb radiation
  1. 原爆ドームthe Atomic Bomb Dome