"zirconiums" in the noun sense
1. zirconium, Zr, atomic number 40
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
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License