(A name proposed for) the chemical element astatine. Cf. anglo-helvetium, n.
单词 | θ68982 |
释义 | the world > matter > chemistry > elements and compounds > metals > specific elements > astatine > [noun] (5) alabamine1932 (A name proposed for) the chemical element astatine. Cf. anglo-helvetium, n. helvetium1940 Earlier name for astatine, n. Cf. also alabamine, n. and anglo-helvetium, n. (Disused.) anglo-helvetium1942 A proposed name for: the element astatine. Cf. alabamine, n. astatine1947 A radioactive element of short half-life, which is rare in nature but can be made artificially; the heaviest element of the halogen group. (Formerly… At1947 The element astatine. |
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