noun
Hiroshima-type atomic bomb
Refers specifically to the uranium gun-type atomic bomb dropped on Hiroshima, as opposed to the plutonium implosion-type used on Nagasaki.
広島型原爆はウランを使った爆弾だった。
The Hiroshima-type atomic bomb was a uranium-based bomb.
Refers to the plutonium implosion-type atomic bomb dropped on Nagasaki, contrasting with the uranium gun-type Hiroshima bomb.
Compound of 広島 (Hiroshima), 型 (type), and 原爆 (atomic bomb).