/ Dictionary / Index B bastnaesite: Meaning and Definition of Find definitions for: bast•naes•ite Pronunciation: (bast'nu-sīt"), [key] — n. a rare-earth mineral, fluorocarbonate of lanthanum and cerium, with a waxy-yellow to reddish-brown color, commonly associated with zinc ores. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bastnaesite (Thesaurus) bastle house Bastogne Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language