Astatine - Definition
astatine
n 1: a highly unstable radioactive element (the heaviest of the
halogen series); a decay product of uranium and thorium
[syn: astatine, At, atomic number 85]
n 1: a highly unstable radioactive element (the heaviest of the
halogen series); a decay product of uranium and thorium
[syn: astatine, At, atomic number 85]