Definitions for



Overview of noun plutonium

The noun plutonium has 1 senses? (no senses from tagged texts)
1. plutonium, Pu, atomic number 94

(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)


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