zirconium oxide

zirconium oxide

noun
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.
Also called zir·co·ni·a [zur-koh-nee-uh] , zirconium dioxide.


Origin:
1865–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Zirconium oxide is always a great word to know.
So is alum. Does it mean:
selecting for combination or action; tending to combine with certain substances in preference to others, such as elective attraction
a double sulfate analogous to potassium alum, as aluminum ammonium sulfate, with the formula R2SO4?X2(SO4)3?24H2O, where R is alkali metal or ammonium
Collins
World English Dictionary
zirconium oxide
 
n
Also called: zirconia a white amorphous powder that is insoluble in water and highly refractory, used as a pigment for paints, a catalyst, and an abrasive. Formula: ZrO2

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