'Rectangular' definitions:

Definition of 'rectangular'

(from WordNet)
adjective
Having four right angles; "a rectangular figure twice as long as it is wide"
adjective
Having a set of mutually perpendicular axes; meeting at right angles; "wind and sea may displace the ship's center of gravity along three orthogonal axes"; "a rectangular Cartesian coordinate system" [syn: orthogonal, rectangular]

Definition of 'Rectangular'

From: GCIDE
  • Rectangular \Rec*tan"gu*lar\ (r?k*t?n"g?*l?r), a. [CF. F. rectangulaire.] Right-angled; having one or more angles of ninety degrees. -- {Rec*tan"gu*lar*ly} (r?k*t?n"g?*l?r*l?), adv. -- {Rec*tan"gu*lar*ness}, n. [1913 Webster]

Synonyms of 'rectangular'

From: Moby Thesaurus