Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)
One of the rarer metals.
A metallic element. Atomic weight, 9 1 . Symbol, Zr.
n. A metal obtained from the minerals zircon and hyacinth. It is commonly in the form of a black powder.