Dictionaryal•u•nitePronunciation: (al'yu-nīt"), [key] —n. a mineral, a hydrous sulfate of potassium and aluminum, KAl3(SO4)2(OH)6, commonly occurring in fine-grained masses. Also called al•um•stone Pronunciation: (al'um-stōn"). [key] Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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