Quadriga, kwod-rī′ga, n. in Greek and Roman times a two-wheeled car drawn by four horses abreast:—pl. Quadrī′gæ. [L., a contr. of quadrijugæ—quatuor, four, jugum, a yoke.]
Quadrigeminous, kwod-ri-jem′i-nus, adj. fourfold, having four similar parts.—Also Quadrigem′inal, Quadrigem′ināte.
Quadrigenarious, kwod-ri-jē-nā′ri-us, adj. consisting of four hundred.
Quadrijugate, kwod-ri-jōō′gāt, adj. (bot.) pinnate with four pairs of leaflets.—Also Quadriju′gous.
Quadrilateral, kwod-ri-lat′ėr-al, adj. having four sides.—n. (geom.) a plane figure having four sides: the four fortresses—Mantua, Verona, Peschiera, and Legnago—which form the points of a quadrilateral.—n. Quadrilat′eralness. [L. quadrilaterus—quatuor, four, latus, lateris, a side.]
Quadriliteral, kwod-ri-lit′ėr-al, adj. of four letters.—n. a word or a root having four letters. [L. quatuor, four, litera, a letter.]
Quadrille, kwa-dril′, n. a square dance for four couples, consisting of five movements: music for such square dances: a game played by four with forty cards.—v.i. to play at quadrille: to dance quadrilles. [Fr.,—Sp. cuadra, a square—L. quadra, a square—quatuor, four.]
Quadrillion, kwod-ril′yun, n. a million raised to the fourth power, represented by a unit with twenty-four ciphers. [Coined from L. quater, four times, on the model of million.]
Quadrilobate, kwod-ri-lō′bāt, adj. having four lobes or lobules.—Also Quad′rilobed.
Quadrilocular, kwod-ri-lok′ū-lar, adj. having four cells, cavities, or compartments.