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: Webster's Revised Unabridged Dictionary (1913)