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zr 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 [synonym: {zirconium}, {Zr}, {atomic number 40}] "{cd}" is now used instead, since Zaire changed its name to the Democratic Republic of the Congo. (1999-01-27) |
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