Defn: Native bismuth sulphide; — sometimes called bismuthite.
BISMUTHOUS
Bis"muth*ous, a.
Defn: Of, or containing, bismuth, when this element has its lower valence.
BISMUTHYL
Bis"muth*yl`, n. (Min.)
Defn: Hydrous carbonate of bismuth, an earthy mineral of a dull white or yellowish color. [Written also bismuthite.]
BISON Bi"son, n. Etym: [L. bison, Gr. , a wild ox; akin to OHG. wisunt, wisant, G. wisent, AS. wesend, Icel. visundr: cf. F. bison.] (Zoöl.) (a) The aurochs or European bison. (b) The American bison buffalo (Bison Americanus), a large, gregarious bovine quadruped with shaggy mane and short black horns, which formerly roamed in herds over most of the temperate portion of North America, but is now restricted to very limited districts in the region of the Rocky Mountains, and is rapidly decreasing in numbers.
BISPINOSE
Bi*spi"nose, a. Etym: [Pref. bi- + spinose.] (Zoöl.)
Defn: Having two spines.
BISQUE
Bisque, n. Etym: [A corruption of biscuit.]
Defn: Unglazed white porcelain.