plutonium (Pu)
The chemical element with atomic number 94. Used in nuclear reactors and weapons.
プルトニウムは原子力発電で使われる。
Plutonium is used in nuclear power generation.
ウラン (uranium) and プルトニウム (plutonium) are both radioactive elements used as nuclear fuel, with plutonium typically produced from uranium in reactors.
plutonium bomb
From English 'plutonium', named after the dwarf planet Pluto.