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[par-uh-lel-uh-gram] /ˌpær əˈlɛl əˌgræm/
a quadrilateral having both pairs of opposite sides parallel to each other.
Origin of parallelogram
1560-70; < Late Latin parallēlogrammum < Greek parallēlógrammon. See parallel, -o-, -gram1
Related forms
[par-uh-lel-uh-gruh-mat-ik] /ˌpær əˌlɛl ə grəˈmæt ɪk/ (Show IPA),
parallelogrammatical, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for parallelogram
Historical Examples
  • The tables at which the guests are seated form three sides of a parallelogram.

    Six Centuries of Painting Randall Davies
  • From shoulders to the ground he was in the form of a parallelogram.

    The Kentucky Ranger Edward T. Curnick
  • The plan is a parallelogram, with a semicircle at the further end.

    The Western World W.H.G. Kingston
  • These lines formed a parallelogram about three feet in length by two in breadth.

    Ran Away to Sea Mayne Reid
  • This day come home the instrument I have so long longed for, the parallelogram.

  • The building is a parallelogram in form, with a frontage of 335 feet.

    Travels in South Kensington Moncure Daniel Conway
  • These four resistances are arranged in the form of a parallelogram.

    Physics Willis Eugene Tower
  • The eyes are of the shape of a parallelogram with rounded corners.

    The Archaeology of the Yakima Valley Harlan Ingersoll Smith
  • The parallelogram in the front contains a cross and has the appearance of a labyrinth, but it is not.

    The Swastika

    Thomas Wilson
  • This stamp is of the form of a parallelogram, and is inscribed on two of its sides.

    Archaeological Essays Vol. 2 James Y. Simpson
British Dictionary definitions for parallelogram


a quadrilateral whose opposite sides are parallel and equal in length See also rhombus, rectangle, trapezium, trapezoid
Word Origin
C16: via French from Late Latin, from Greek parallēlogrammon, from parallēlosparallel + grammē line, related to graphein to write
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 parallelogram

1560s, from Middle French parallélogramme (1550s) and directly from Late Latin parallelogrammum, from Greek parallelogrammon noun use of neuter adjective meaning "bounded by parallel lines," from parallelos (see parallel) + stem of graphein "to write" (see -graphy).

Online Etymology Dictionary, © 2010 Douglas Harper
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parallelogram in Science
A four-sided plane figure with opposite sides parallel. Rhombuses and rectangles are parallelograms.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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