/ Dictionary / Index S scandium: Meaning and Definition of Find definitions for: scan•di•um Pronunciation: (skan'dē-um), [key] — n. Chem. a rare, trivalent, metallic element obtained from thortveitite. Symbol: Sc; at. wt.: 44.956; at. no.: 21; sp. gr.: 3.0. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: scandium (Thesaurus) Scandinavian lox scandium oxide Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language