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[rek-tang-guh l] /ˈrɛkˌtæŋ gəl/
a parallelogram having four right angles.
Origin of rectangle
1565-75; < Medieval Latin rēctangulum, Late Latin rēctiangulum right-angled triangle (noun use of neuter of rēctiangulus having a right angle), equivalent to rēcti- recti- + angulum angle1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for rectangle
Contemporary Examples
Historical Examples
  • Her little four-year-old boy who was with her said, “rectangle.”

  • They formed a rectangle as long as a little finger and as wide.

    An American Robinson Crusoe Samuel. B. Allison
  • In this rectangle, the red sand of the desert lay clear and stark.

    Rebels of the Red Planet Charles Louis Fontenay
  • A rectangle of blue and hazy light was framed by the dark wall.

    The Dead Command

    Vicente Blasco Ibez
  • The comparison or rate of a quadrate with a rectangle is first.

    The Way To Geometry Peter Ramus
  • This is the rate of a quadrate with a rectangle and a quadrate.

    The Way To Geometry Peter Ramus
  • For the rectangle of the segments, and the quadrate, are made of one side, and of the segments of the other.

    The Way To Geometry Peter Ramus
British Dictionary definitions for rectangle


a parallelogram having four right angles Compare rhombus
Word Origin
C16: from Medieval Latin rectangulum, from Latin rectus straight + angulus angle
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
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Word Origin and History for rectangle

1570s, from Middle French rectangle (16c.) and directly from Late Latin rectangulum, from rect-, comb. form of Latin rectus "right" (see right (adj.1)) + Old French angle (see angle (n.)). Medieval Latin rectangulum meant "a triangle having a right angle."

Online Etymology Dictionary, © 2010 Douglas Harper
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rectangle in Science
A four-sided plane figure with four right angles.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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