Breadcrumb Home > Dictionary > Index T thortveitite: Meaning and Definition of Find definitions for: thort•veit•ite Pronunciation: (tôrt-vī'tīt, thôrt-), [key] — n. a scandium yttrium silicate mineral occurring in grayish-green orthorhombic crystals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thortveitite (Thesaurus) Thorshavn Thorvaldsen ✖ Related Content Daily Word Quiz: glissade Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language