[ 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·al·lel·o·gram·mat·ic [par-uh-lel-uh-gruh-mat-ik] /ˌpær əˌlɛl ə grəˈmæt ɪk/, par·al·lel·o·gram·mat·i·cal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for parallelogram

British Dictionary definitions for parallelogram


/ (ˌpærəˈlɛləˌɡræm) /


a quadrilateral whose opposite sides are parallel and equal in lengthSee also rhombus, rectangle, trapezium, trapezoid

Word Origin for parallelogram

C16: via French from Late Latin, from Greek parallēlogrammon, from parallēlos parallel + 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

Science definitions for parallelogram


[ păr′ə-lĕlə-grăm′ ]

A four-sided plane figure with opposite sides parallel. Rhombuses and rectangles are parallelograms.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.