a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
plutonium的用法和樣例：
例句
用作名詞 (n.)
In October, North Korea exploded its first nuclear device, made using plutonium. 10月，北朝鮮爆炸了他的第一個由鈈製造的核裝置。
Uranium and plutonium are radioelements, which are widely used in the military area. 鈾和鈈是錒系的兩种放射性元素
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