Source : Webster's Revised Unabridged Dictionary (1913)
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.
Source : WordNet®
rectangular
adj 1: having four right angles; "a rectangular figure twice as
long as it is wide"
2: 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}]