Hypertext Webster Gateway: "hypersthene"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Hypersthene \Hy"per*sthene\, n. [Gr. "ype`r over + ? strength:
cf. F. hyperst[`e]ne.] (Min.)
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.
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.