atomic number 58

Definitions of atomic number 58
  1. noun
    a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
    synonyms: Ce, cerium
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    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.
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