Definition of lanthanum

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  • lanthanum is a valid Scrabble US word with a point value of 14
  • lanthanum is a valid Scrabble UK word with a point value of 14
  • lanthanum is a valid Words with friends word with a point value of 18

Definition of lanthanum

  • a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth (noun)

    Synonyms

    1. atomic number 57
    2. la

See definition of lanthanum in Merriam Webster