hypersthene
n. பச்சைநிறக் கனிப்பொருள் வகை.
Hy"per*sthene, n. Etym: [Gr. hyperstène.] (Min.) Defn: An orthorhombic mineral of the pyroxene group, of a grayish or greenish black color, often with a peculiar bronzelike luster (schiller) on the cleavage surface.