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Definition of Neptunium
1. Noun. A radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium.
Definition of Neptunium
1. n. A new metallic element, of doubtful genuineness and uncertain identification, said to exist in certain minerals, as columbite.
Definition of Neptunium
1. [n -S]
Medical Definition of Neptunium
1.
Lexicographical Neighbors of Neptunium
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