Zr n 1: 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 [syn: {zirconium}, {Zr}, {atomic number 40}]
zr <networking> The old {country code} for Zaire. "{cd}" is now used instead, since Zaire changed its name to the Democratic Republic of the Congo. (1999-01-27)