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Definition of quadrilateral

quadrilateral

/ˌkwɑːd.rəˈlæt̬.ɚ.əl/
quad · ri · lat · er · al
Adverb:quadrilaterally
•
Plural:quadrilaterals
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quadrilateral Lexical Profile

quadrilateral Game Scores & Validity

• noun

1

A two-dimensional geometric polygon having four straight sides and four vertices, such as a square, rectangle, rhombus, or trapezoid.

Example

"In Euclidean geometry, the interior angles of any simple quadrilateral always sum to 360 degrees."

Synonyms
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• adjective

1

Having four straight sides.

Example

"The ancient fortress was built around a large, quadrilateral courtyard."

2

Involving or shared by four parties, states, or groups.

Example

"The diplomats gathered in Geneva for quadrilateral talks aimed at resolving the regional trade dispute."

Synonyms
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Antonyms
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• Rhymes for quadrilateral

• Nearby Words

quadrennial
quadrennially
quadriceps
quadrilateral
quadrilingual
quadrillion
quadrillionth

Word Origin & Etymology

Borrowed in the mid-17th century from Late Latin quadrilaterus ('four-sided'), a compound of quattuor ('four') and latus ('side, flank').

Cite this Entry

Wordmom. (2026). Definition of Quadrilateral. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/quadrilateral
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