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Noun cerium has 1 sense
  1. cerium, Ce, atomic number 58 - a ductile gray metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
    --1 is a kind of metallic element, metal
    --1 is a substance of
     monazite; bastnasite, bastnaesite; gadolinite, ytterbite
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