par·​al·​lel·​o·​gram | \ ˌper-ə-ˈle-lə-ˌgram How to pronounce parallelogram (audio) , ˌpa-rə- \

Definition of parallelogram

: a quadrilateral with opposite sides parallel and equal

Examples of parallelogram in a Sentence

Rectangles, squares, and rhombuses are all parallelograms.
Recent Examples on the Web My door is a parallelogram, because of the slope, and so far it's worked fine. Ryan D'agostino, Popular Mechanics, "How to Make a Great Garden Fence," 6 Mar. 2021 His greatest mark on Boston is the Hancock building, an 800-foot-tall glass parallelogram that towers over Trinity Church, a beloved Romanesque edifice by the 19th-century architect Henry Hobson Richardson. Fred A. Bernstein, New York Times, "Henry Cobb, Courtly Architect of Boston’s Hancock Tower, Dies at 93," 4 Mar. 2020 Until 2018 there was never a doubt that the boundaries, a jagged parallelogram over North Texas’ two largest counties, would hold steady. Nic Garcia, Dallas News, "Why everyone is focused on this suburban Texas congressional race," 1 Mar. 2020 The tower would gradually widen at the northeast and southwest corners, transitioning from an efficient rectangle at the base to an expansive parallelogram at the top. Ryan Ori,, "A Helmut Jahn-designed tower — the largest condo building launched in Chicago since the recession — breaks ground on South Michigan Avenue next week," 16 Oct. 2019 About all there is to the constellation Lyra is the bright star Vega, which shines very high in the southeastern sky, with four dimmer stars forming a lopsided rectangle, or parallelogram, just to the lower left of Vega. Mike Lynch, Twin Cities, "Sky Watch: Lyra the Lyre may be a small constellation, but it has a big story," 18 Aug. 2019 Vega and a small faint parallelogram below it are supposed to outline a celestial harp. Mike Lynch, Twin Cities, "Sky Watch: There are many delights to be found in August’s evening skies," 4 Aug. 2019 Vega and a small parallelogram of fainter stars to the lower right is all there is to Lyra. Mike Lynch, Twin Cities, "Sky Watch: The great Summer Triangle will take you places," 21 July 2019 The pattern of creases forms a tessellation of parallelograms, and the whole structure collapses and unfolds in a single motion — providing an elegant way to fold a map. Quanta Magazine, "The Atomic Theory of Origami," 31 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'parallelogram.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of parallelogram

1570, in the meaning defined above

History and Etymology for parallelogram

Late Latin or Greek; Late Latin parallelogrammum, from Greek parallēlogrammon, from neuter of parallēlogrammos bounded by parallel lines, from parallēlos + grammē line, from graphein to write — more at carve

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Time Traveler for parallelogram

Time Traveler

The first known use of parallelogram was in 1570

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Statistics for parallelogram

Last Updated

14 Mar 2021

Cite this Entry

“Parallelogram.” Dictionary, Merriam-Webster, Accessed 22 Apr. 2021.

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English Language Learners Definition of parallelogram

geometry : a four-sided shape made up of two pairs of straight parallel lines that are equal in length


par·​al·​lel·​o·​gram | \ ˌper-ə-ˈle-lə-ˌgram How to pronounce parallelogram (audio) \

Kids Definition of parallelogram

: a plane figure with four sides whose opposite sides are parallel and equal

More from Merriam-Webster on parallelogram

Nglish: Translation of parallelogram for Spanish Speakers Encyclopedia article about parallelogram

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