adjective
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shaped like a rectangle
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having or relating to right angles
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mutually perpendicular
rectangular coordinates
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having a base or section shaped like a rectangle
Other Word Forms
Etymology
Origin of rectangular
1615–25; < Medieval Latin rēctangul ( um ) rectangle + -ar 1
Explanation
In geometry, something that is rectangular had four sides and four right angles. Cereal boxes, dollar bills, and many cell phones have a rectangular shape. Anything shaped like a rectangle is rectangular. Your backyard may be rectangular, and your brother's oversized suit jacket might give his body a somewhat rectangular shape. The most important aspect of something that makes it rectangular is those four right angles, and the word itself is rooted in the Latin rectus, "right," and the Old French angle, "angle."
Vocabulary lists containing rectangular
Geometry - Introductory
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Geometry - Middle School
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Number and Operations: Fractions
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
As the 65-year-old was using a pickax to remove what he thought was a rectangular piece of concrete, the object moved.
From Los Angeles Times ● Aug. 14, 2026
Tail Town’s main room is filled with stacked cat beds, an exercise wheel, two huge rectangular storage benches sprinkled with doughnut-shaped beds, and cat-themed art on the walls.
From Los Angeles Times ● Aug. 10, 2026
Gathered around a rectangular table, he announced his plan: five panels of outside experts would spend the next few months examining how the Fed reads the economy and explains itself.
From The Wall Street Journal ● Jul. 28, 2026
The repair company has said it will fix the rectangular structure as part of its warranty.
From BBC ● Jun. 23, 2026
The study was longer than she’d expected, a rectangular room bathed in the flickering golden light of several fat waxy candles.
From "Beasts of Prey" by Ayana Gray
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
