Quadrilateral

Origin

From Latin quadrilaterus (1650), quadri- (four) + latus (sided)

Noun

1. A polygon with four sides.
2. An area defended by four fortresses supporting each other.The Venetian quadrilateral comprised Mantua, Peschiera, Verona, and Legnano.

Hyponyms

Full definition of quadrilateral

Adjective

1. having four sides.