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Thesaurus: neptunium

A new metallic element, of doubtful genuineness and uncertain indentification, said to exist in certain minerals, as columbite.

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Definitions

  1. n. A new metallic element, of doubtful genuineness and uncertain indentification, said to exist in certain minerals, as columbite.
  2. n. a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium
  3. A new metallic element, of doubtful genuineness and uncertain indentification, said to exist in certain minerals, as columbite. Hermann.
  4. A new metallic element, of doubtful genuineness and uncertainindentification, said to exist in certain minerals, as columbite.Hermann.
  5. n. a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium