from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A minor accessory mineral, CaTiO3, occurring in basic rocks, as orthorhombic crystals.
from The Century Dictionary and Cyclopedia
- n. A titanate of calcium, occurring in crystals of isometric form (though perhaps through pseudosymmetry), and having a yellow to black color.
Named for Russian mineralogist L. A. Perovski (1792-1856) in 1839. (Wiktionary)