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Definition 2024


astatine

astatine

English

Chemical element
At Previous: polonium (Po)
Next: radon (Rn)

Noun

astatine (uncountable)

  1. A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.
    • 2003, Bill Bryson, A Short History of Nearly Everything, BCA, p. 221:
      Astatine, for instance, is practically unstudied. It has a name and a place on the periodic table (next to Marie Curie's polonium), but almost nothing else.

Synonyms

  • alabamine (proposed name)
  • anglo-helvetium (formerly)

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