| 单词 | plutonium |
| 释义 | Plutonium nnoun.substancea 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 Synset:Pu atomic number 94 Hypernyms:chemical element element Inherited Hypernyms:plutoniumchemical elementsubstancematterphysical entityentity Inherited Hypernyms:plutoniumchemical elementsubstancepartrelationabstractionentity Direct Hyponyms:plutonium 239 Full Hyponyms: plutonium 239weapons plutonium |
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