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Plutonium

//pluːˈtoʊniəm// noun

Noun

1
The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air. uncountable, usually
"Plutonium? You mean this sucker's nuclear?"
2
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 wordnet
3
Alternative form of ploutonion. alt-of, alternative, countable, historical, usually

After Pluto (dwarf planet) + -n- + -ium. More in Wikipedia at plutonium § History.

Unscramble this word: plutonium