RUBIAN
Ru"bi*an, n. Etym: [L. rubia madder, fr. rubeus red.] (Chem.)
Defn: One of several color-producing glycosides found in madder root.
RUBIANIC
Ru`bi*an"ic, a. (Chem.)
Defn: pertaining to, or derived from, rubian; specifically, designating an acid called also ruberythrinic acid. [Obs.]
RU BIBLE
Ru" bi*ble, n.
Defn: A ribble. [Obs.] Chaucer.
RUBICAN
Ru"bi*can, a. Etym: [F.]
Defn: Colored a prevailing red, bay, or black, with flecks of white or gray especially on the flanks; — said of horses. Smart.
RUBICELLE Ru"bi*celle, n. Etym: [Cf. F. rubacelle, rubicelle, fr. L. rubeus red, reddish.] (Min.)
Defn: A variety of ruby of a yellowish red color, from Brazil.