zirconium : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: zirconium	by the DICT Development Group
3 results for zirconium
From WordNet (r) 3.0 (2006) [wn]:
zirconium n a lustrous grey 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 Synonym(s): zirconium, Zr, atomic number 40
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Zirconium \Zirco"nium\, n. [NL.] (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.
From The Elements (22Oct97) [elements]:
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.