Definitions
A very rare radioactive chemical element in the halogen group.
Word origin
From Ancient Greek ἄστατος (ástatos, “unstable”) + -ine.
Used in a sentence
“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.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Element with symbol At”8 letters
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