rectangular > define
adjective
- Having four right angles.
- usage: "a rectangular figure twice as long as it is wide"
- Having a set of mutually perpendicular axes; meeting at right angles.
- usage: "wind and sea may displace the ship's center of gravity along three orthogonal axes"; "a rectangular Cartesian coordinate system"
- synonyms: orthogonal
by WordNet 3.0 © 2006 by Princeton University
(a.) Right-angled; having one or more angles of ninety degrees.
by Webster's Revised Unabridged Dictionary