1. In most branches of science bi- in composition denotes two, twice, or doubly; as, bidentate, two-toothed; biternate, doubly ternate, etc.
2. (Chem.)
Defn: In the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably.
BIACID
Bi*ac"id, a. Etym: [Pref. bi- + acid.] (Chem.)
Defn: Having two hydrogen atoms which can be replaced by negative atoms or radicals to form salts; — said of bases. See Diacid.
BIACUMINATE
Bi`a*cu"mi*nate, a. Etym: [Pref. bi- + acuminate.] (Bot.)
Defn: Having points in two directions.
BIANGULAR
Bi*an"gu*lar, a. Etym: [Pref. bi- + angular.]
Defn: Having two angles or corners.
BIANGULATE; BIANGULATED Bi*an"gu*late, Bi*an"gu*la`ted, a. Etym: [Pref. bi- + angulate, angulated.]