Source : WordNet®

Zr
     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: {zirconium}, {atomic number 40}]

Source : Free On-Line Dictionary of Computing

zr
     
         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)