QUADRILATERAL


Meaning of QUADRILATERAL in English

adj having four sides, and consequently four angles; quadrangular.

2. quadrilateral ·noun a plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines.

3. quadrilateral ·noun an area defended by four fortresses supporting each other; as, the venetian quadrilateral, comprising mantua, peschiera, verona, and legnano.

Webster English vocab.      Английский словарь Webster.