noun
- A highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium.
- synonyms: astatine, atomic number 85
- 100 at equal 1 kip in Laos. .
WordNet 3.0 © 2006 by Princeton University
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| Chicago | WordNet. 2010. "at" http://smartdefine.org/at/definitions/1325487 (accessed September 20, 2026). |
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