Dictionarydaw•son•itePronunciation: (dô'su-nīt"), [key] —n. an orthorhombic mineral, hydrous sodium aluminum carbonate, NaAlCO3(OH)2, with a vitreous luster, occurring as white blade-shaped crystals: mined as an ore of aluminum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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