atomic number 93

Noun
  1. A radioactive transuranic metallic element;
    Found in trace amounts in uranium ores;
    A by-product of the production of plutonium (synset 114670581)
    is a type of: metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
    same as: neptunium, np

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