Definition of quadrilateral in English:

quadrilateral

Syllabification: quad·ri·lat·er·al
Pronunciation: /ˌkwädrəˈlatərəl
 
/

noun

  • A four-sided figure.
    More example sentences
    • Cut an 8x8 chessboard into two triangles and two quadrilaterals.
    • The students were also not aware of relationships among quadrilaterals, such as whether all squares are rectangles or vice versa.
    • The terrain I generated had a total of over 570000 quadrilaterals.

adjective

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  • Having four straight sides.
    More example sentences
    • The bilobate living area has quadrilateral contours and is partly flanked by some horizontal logs and a vertical slab.
    • Techniques were developed that guaranteed all quadrilateral surfaces were planar.
    • It turns out there are many different pairs of quadrilateral shapes that form a nonperiodic tiling pattern.

Origin

mid 17th century: from late Latin quadrilaterus (from Latin quadri- 'four' + latus, later- 'side') + -al.

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