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Definition of Plutonium 239
1. Noun. A highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons.
Generic synonyms: Atomic Number 94, Plutonium, Pu
Specialized synonyms: Weapon-grade Plutonium, Weapons Plutonium
Specialized synonyms: Weapon-grade Plutonium, Weapons Plutonium
Lexicographical Neighbors of Plutonium 239
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