- astatine (n.)
[astatine 词源字典]
- radioactive element, named 1947, from Greek astatos "unstable" (see astatic) + chemical suffix -ine (2). So called for its short half-life and lack of stable isotopes. "The element appears not to have a stable form and probably does not exist in nature" [Flood, "Origin of Chemical Names"].[astatine etymology, astatine origin, 英语词源]
- devastating (adj.)
- 1630s, present participle adjective from devastate. Trivial use by 1889.