/ Dictionary / Index A alunogen: Meaning and Definition of Find definitions for: a•lu•no•gen Pronunciation: (u-l'nu-jun), [key] — n. a mineral, hydrous sulfate of aluminum, Al(SO)&multiplydot;18HO, occurring as a white, fibrous crust on quarry or mine walls. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. alunite alure Related Content Daily Word Quiz: taut Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language