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plutonium
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As a noun, plutonium means the transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
Meanings of plutonium
2 meaningsnoun
The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
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
Similar: Pu, atomic number 94
Alternative form of ploutonion
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).