Definition of astatine

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  • astatine is a valid Scrabble US word with a point value of 8
  • astatine is a valid Scrabble UK word with a point value of 8
  • astatine is a valid Words with friends word with a point value of 9

Definition of astatine

  • a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium (noun)

    Synonyms

    1. at
    2. atomic number 85

See definition of astatine in Merriam Webster