| atom bomb | (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), Syn. plutonium bomb, atomic bomb, A-bomb, fission bomb |
| プルトニウム爆弾 | [プルトニウムばくだん, purutoniumu bakudan] (n) plutonium bomb [Add to Longdo] |