rectangle.
Any quadrilateral having opposing sides parallel and four right angles.
Meaning & usage
Any quadrilateral having opposing sides parallel and four right angles.
Such a quadrilateral that is oblong (longer than it is wide): one that is not regular (equilateral), that is, any except a square.
A right angle.
The product of two quantities.
Where this word comes from
Borrowed from Middle French, from Old French, from Medieval Latin or Late Latin rectangulum (“right angle”), from Latin rectus (“right”) + angulus (“an angle”).
Right-angled.
a rectangle triangle
Where this word comes from
Borrowed from Middle French, from Old French, from Medieval Latin or Late Latin rectangulum (“right angle”), from Latin rectus (“right”) + angulus (“an angle”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.