/ Dictionary / Index B brookite: Meaning and Definition of Find definitions for: brook•ite Pronunciation: (brook'īt), [key] — n. Mineral. a brown, red, or black mineral, titanium dioxide, TiO, trimorphous with rutile and anatase. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Brookings brooklet Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language