parallelogram

noun

par·​al·​lel·​o·​gram ˌper-ə-ˈle-lə-ˌgram 

ˌpa-rə-

: 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

In a periodic tiling, the arrangement of tiles repeats in a regular pattern determined by an infinite grid of parallelograms. —Craig S. Kaplan, Scientific American, 1 Jan. 2024

Laid out in somewhat of a parallelogram, this district has houses that date back to before the Civil War. —Trudy Haywood Saunders, Travel + Leisure, 4 Mar. 2024

Bring the square behind the parallelogram, and the triangle at top in front of the square that is now below it. —Kevin Hartnett, Quanta Magazine, 5 Jan. 2024

Some have a little piano keyboard while others have a grid of black and white buttons set roughly in the shape of a parallelogram. —IEEE Spectrum, 23 Dec. 2022

Word History

Etymology

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

First Known Use

1570, in the meaning defined above

Kids Definition

parallelogram

noun

par·​al·​lel·​o·​gram ˌpar-ə-ˈlel-ə-ˌgram 

: a four-sided figure whose opposite sides are parallel and of equal length