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的用法和样例：
例句
用作名词 (n.)
In October, North Korea exploded its first nuclear device, made using plutonium. 10月，北朝鲜爆炸了他的第一个由钚制造的核装置。
Uranium and plutonium are radioelements, which are widely used in the military area. 铀和钚是锕系的两种放射性元素
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