| Chemistry. a white, heavy, amorphous, odorless and tasteless, infusible, water-insoluble powder, ZrO2, used chiefly as a pigment for paints, an abrasive, and in the manufacture of refractory crucibles. |
[zur-koh-nee-uh] 
, zirconium dioxide.
| zir·co·ni·a (zûr-kō'nē-ə) n. Cubic zirconia. [New Latin, from zircon.] |
zirconia
zirconium dioxide, an industrially important compound of zirconium and oxygen usually derived from the mineral zircon (see zirconium).
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