QUADRIGA, in antiquity, a car or chariot drawn by four horses. On the reverses of medals, we frequently see the emperor or Victory in a quadriga, holding the reins of the horses; whence these coins are, among the curious, called nummi quadrigati, and vittoriosi.

Quadrilater. QUADRILATERAL, in geometry, a figure whose perimeter consists of four sides and four angles; whence it is also called a quadrangular figure.

Quadrille. QUADRILLE, a little troop or company of cavaliers, pompously dressed, and mounted for the performance of carousals, jests, tournaments, runnings at the ring, and other gallant diversions.