/ Dictionary / Index B baddeleyite: Meaning and Definition of Find definitions for: bad•de•ley•ite Pronunciation: (bad'l-ē-īt" bad'lē-), [key] — n. a mineral, zirconium oxide, ZrO, used as a refractory. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: baddeleyite (Thesaurus) bad conduct discharge badder Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language