zir·co·ni·um /ˌzɝˈkoniəm/
鋯
zir·co·ni·um /(ˌ)zɝˈkonɪəm/ 名詞
鋯
Zir·co·ni·um n. Chem. A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.
◄ ►
zirconium
n : a lustrous gray strong metallic element resembling titanium;
it is used in nuclear reactors as a neutron absorber; it
occurs in baddeleyite but is obtained chiefly from zircon
[syn: Zr, atomic number 40]
zirconium
Symbol: Zr
Atomic number: 40
Atomic weight: 91.22
Grey-white metallic transition element. Five natural isotopes and six
radioactive isotopes are known. Used in nuclear reactors for a neutron
absorber. Discovered in 1789 by Martin Klaproth, isolated in 1824 by
Berzelius.