/ Dictionary / Index S scandium oxide: Meaning and Definition of Find definitions for: scan'dium ox'ide Pronunciation: [key] — Chem. Chem. a white infusible powder, ScO, soluble in acids. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. scandium scanner Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language