polonium

Noun
  1. A radioactive metallic element that is similar to tellurium and bismuth;
    Occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor (synset 114674735)
    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: atomic number 84, po

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