水すい素そ爆ばく弾だん

noun

hydrogen bomb

A nuclear weapon using hydrogen fusion; often contrasted with 原子爆弾 (atomic bomb). The abbreviation 水爆 is also common.

See also: 水爆

• 水すい素そ爆ばく弾だんは原げん子し爆ばく弾だんよりはるかに強きょう力りょくだ。

  A hydrogen bomb is far more powerful than an atomic bomb.