shaped like a rectangle.
having the base or section in the form of a rectangle: a rectangular pyramid.
having one or more right angles.
forming a right angle.

Origin of rectangular

1615–25; < Medieval Latin rēctangul(um) rectangle + -ar1
Related formsrec·tan·gu·lar·i·ty [rek-tang-gyuh-lar-i-tee] /rɛkˌtæŋ gyəˈlær ɪ ti/, rec·tan·gu·lar·ness, nounrec·tan·gu·lar·ly, adverbnon·rec·tan·gu·lar, adjectivenon·rec·tan·gu·lar·ly, adverbnon·rec·tan·gu·lar·i·ty, nounsub·rec·tan·gu·lar, adjectiveun·rec·tan·gu·lar, adjectiveun·rec·tan·gu·lar·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rectangular

Contemporary Examples of rectangular

Historical Examples of rectangular

  • It was circular at one end and rectangular at the other, at which was the entrance.


    Thomas Roger Smith

  • The patio, in its blackness, was like the rectangular mouth of a bottomless pit.


    Joseph Conrad and F.M. Hueffer

  • The first type consists of a rectangular label, measuring about 25½ by 38 mm.

  • It is simply a rectangular piece of stuff; as a rule, all blue, red, or black.

  • They are rectangular pieces of cardboard, with windows cut in them.

    The Story of the Mind

    James Mark Baldwin

British Dictionary definitions for rectangular



shaped like a rectangle
having or relating to right angles
mutually perpendicularrectangular coordinates
having a base or section shaped like a rectangle
Derived Formsrectangularity, nounrectangularly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for rectangular

1620s, from Middle French rectangulaire (16c.) or formed in English from Latin stem of rectangle + -ar. Related: Rectangularity.

Online Etymology Dictionary, © 2010 Douglas Harper