noun
- A four-sided polygon.
- synonyms: quadrangle, tetragon
adjective
- Having four sides.
- synonyms: four-sided
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). quadrilateral. Retrieved September 25, 2026, from http://smartdefine.org/quadrilateral/definitions/1181758 |
| Chicago | WordNet. 2010. "quadrilateral" http://smartdefine.org/quadrilateral/definitions/1181758 (accessed September 25, 2026). |
| Harvard | WordNet 2010, quadrilateral, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/quadrilateral/definitions/1181758>. |
| MLA | WordNet. "quadrilateral" 23 October 2010. Web. 25 September 2026. <http://smartdefine.org/quadrilateral/definitions/1181758> |