astatine means A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85. Lexicurio rates it Rare gem — a strength score of 83 out of 100.
astatine is pronounced /ˈastətiːn/.
Etymology
From Ancient Greek ἄστατος (ástatos, “unstable”) + -ine.
noun
- A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.“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.”