from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A hard white amorphous powder, ZrO2, derived from zirconium and also found naturally, used chiefly in pigments, refractories, and ceramics and as an abrasive.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a white crystalline oxide; used in refractories and in insulation and abrasives and enamels and glazes
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