Zr uncommon noun 1. 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 Synonymszirconiumatomic number 40 Related words Broader terms metallic element Parts baddeleyitezircon WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
