/ Dictionary / Index A aluminum oxide: Meaning and Definition of Find definitions for: alu'minum ox'ide Pronunciation: [key] alumina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aluminum nitrate aluminum silicate Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language