astatin (at)

listen to the pronunciation of astatin (at)
Турецкий язык - Английский Язык
(Nükleer Bilimler) astatine
A highly radioactive chemical element (symbol At) with atomic number 85 and one of the halogens
{i} rare radioactive element (Chemistry)
a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium