Definition of thulium

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  • thulium is a valid Scrabble US word with a point value of 12
  • thulium is a valid Scrabble UK word with a point value of 12
  • thulium is a valid Words with friends word with a point value of 15

Definition of thulium

  • a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime (noun)

    Synonyms

    1. atomic number 69
    2. tm

See definition of thulium in Merriam Webster