[ uh-loo-nuh-juhn ]
/ əˈlu nə dʒən /
a mineral, hydrous sulfate of aluminum, Al2(SO4)3⋅18H2O, occurring as a white, fibrous crust on quarry or mine walls.
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Words nearby alunogen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020