atomic number 67

Noun
  1. A trivalent metallic element of the rare earth group;
    Occurs together with yttrium;
    Forms highly magnetic compounds (synset 114664400)
    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.
    substance meronym: gadolinite, ytterbite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
    same as: ho, holmium

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