ПЛУТОНИЙ существительное

[Определение Wordnet: 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]

[Понятие РуТез: химический элемент]

[Понятие РуТез: трансурановые элементы]

[Понятие РуТез: плутоний]