| 释义 |
zirconium Chem.|zəˈkəʊnɪəm|
Also 9 zirconum.
[mod.L., f. zircon.]
A metallic element, obtained from zircon as a black powder or as a greyish crystalline substance. Symbol Zr.
1808Davy in Phil. Trans. XCVIII. 353 Had I been so fortunate as to have..procured the metallic substances I was in search of, I should have proposed for them the names of silicium, alumium, zirconium, and glucium. 1812― Chem. Philos. 361 No substance has as yet been formed..in which zirconum can be supposed to exist free from oxygene. 1868Fownes' Chem. 382 Zirconium..is a tetrad metal.
attrib.1868Fownes' Chem. (ed. 10) 382 Zirconium Oxide..is prepared by strongly igniting zircon. 1906Athenæum 1 Sept. 245/3 The osmium, tantalum, and zirconium incandescent filaments of electric glow-lamps. |