from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A four-sided plane figure with four right angles.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A quadrilateral having opposing sides parallel and four right angles.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Rectangular.
  • n. A four-sided figure having only right angles; a right-angled parallelogram.

from The Century Dictionary and Cyclopedia

  • Rectangular; right-angled.
  • n. A quadrilateral plane figure having all its angles right angles and its opposite sides consequently equal.
  • n. The product of two lengths.
  • n. A right angle.
  • n. A right-angled triangle.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a parallelogram with four right angles


French, from Medieval Latin rēctangulum, a right triangle, from Late Latin rēctiangulum : Latin rēctus, right; see reg- in Indo-European roots + Latin angulus, angle.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French, from Old French, from Medieval Latin rectanglum ("right angle"), from rectus ("right") + angulus ("an angle"). (Wiktionary)



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