WordReference Random House Unabridged Dictionary of American English © 2025
brook•ite
(brŏŏk′īt),USA pronunciation n. [Mineral.]
- Mineralogya brown, red, or black mineral, titanium dioxide, TiO2, trimorphous with rutile and anatase.
- 1875–80; named after H. J. Brooke (1771–1857), English mineralogist; see -ite1