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co•run•dum



Pronunciation: (ku-run'dum), [key]
—n.
a common mineral, aluminum oxide, Al2O3, notable for its hardness: transparent varieties, as sapphire and ruby, are used as gems, other varieties as abrasives: often made synthetically.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Corumbácoruscant
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