单词 | celtium |
释义 | celtiumn. Chemistry. Now historical. The element of atomic number 72 (later named hafnium), claimed to have been discovered in minerals containing lutetium and other rare earth elements.Urbain’s claim to have discovered element 72 is regarded as mistaken, as the properties he attributed to it did not correspond to those of hafnium later found in zirconium ores. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > hafnium > [noun] celtium1911 hafnium1923 1911 Jrnl. Chem. Soc. 100 ii. 115 The name celtium is given to the corresponding element, and the symbol Ct assigned to it. 1967 R. J. Callow Industr. Chem. Lanthanons, Yttrium, Thorium & Uranium i. 3 Claims for the existence of elements such as decipium, glaucodymium, aldebaranium and celtium were made and hotly denied. 2013 E. Scerri Tale Seven Elements p. xxiii British and French journals, and newspapers especially, took the side of Urbain, who claimed to have discovered element 72 in the form of celtium. This entry has been updated (OED Third Edition, March 2022). < n.1911 |
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