astatine

英 ['æstətiːn]美 ['æstətin]

n. [化学] 砹（化学元素At）

中文词源

astatine 砹

前缀a-, 不，非。词根st, 站立，稳定。指该化学元素不稳定。

英文词源

astatine (n.)

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"].

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