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Adjective: quadrilateral  ,kwód-ree'la-tu-rul
  1. Having four sides
    "The quadrilateral pyramid was a popular tourist attraction";
    - four-sided
Noun: quadrilateral  ,kwód-ree'la-tu-rul
  1. A four-sided polygon
    "A square is a regular quadrilateral";
    - quadrangle, tetragon

Derived forms: quadrilaterals

See also: many-sided, multilateral

Type of: polygon, polygonal shape

Encyclopedia: Quadrilateral