rectangular

Adjective
Synonyms: orthogonal

WordNet 3.0

Adjective (2)

  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”Synonyms: orthogonal
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Webster's Dictionary (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]
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