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plutonium

noun
🔊/pluːˈtəʊniəm/
🔊/pluːˈtəʊniəm/
 [uncountable]
(symbol Pu)
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  1. a chemical element. Plutonium is radioactive and is used in nuclear weapons and in producing nuclear energy.钚（放射性化学元素）
    Extra Examples
    • the capability to enrich uranium or reprocess plutonium浓缩铀或再处理钚的能力
    • one ton of plutonium extracted from spent nuclear fuel从废核燃料中提取的一吨钚
    • the plane that dropped a plutonium bomb on the city of Nagasaki在长崎市扔下一颗钚弹的那架飞机
    Topics Physics and chemistryc2
    Oxford Collocations Dictionaryadjective
    • radioactive
    • weapons-grade
    verb + plutonium
    • extract
    • produce
    • recover
    • …
    plutonium + noun
    • fuel
    • production
    • bomb
    • …
    See full entry
    Word Origin1940s: from Greek ‘Pluto’, on the pattern of neptunium, being the next planet beyond Neptune.