原爆 Traditional form: 原爆 Pinyin (reading): yuánbào Definitions: atom bomb contraction of 原子爆彈/原子爆弹 (yuánzǐbàodàn) Characters: 原 - source, origin, beginning 爆 - crackle, pop; burst, explode Traditional characters: 原 - source, origin, beginning 爆 - crackle, pop; burst, explode