Quadrilateral

Definition of quadrilateral:

part of speech: noun

A plane figure with four sides and four angles.

part of speech: noun

A plane figure of four sides.

part of speech: noun

( geom.) A plane figure having four sides.

part of speech: adjective

having four sides

part of speech: adjective

having four sides and four angles

Usage examples for quadrilateral:

• Three more of the steel spikes were hammered into the surface, forming a rough quadrilateral around the Pole. "Anchorite", Randall Garrett.