noun
dirty bomb
A conventional explosive device combined with radioactive material, designed to spread contamination. The term is a direct loan from English and is used in security and military contexts.
テロリストがダーティーボムを使用する可能性が懸念されている。
There are concerns that terrorists might use a dirty bomb.
Variant with a middle dot; less common but still seen.
Borrowed from English 'dirty bomb'.