[ pol-ee-gon ]
See synonyms for polygon on Thesaurus.com
  1. a figure, especially a closed plane figure, having three or more, usually straight, sides.

Origin of polygon

First recorded in 1560–70; from Latin polygōnum, from Greek polýgōnon, noun use of neuter of polýgōnos “many-angled”; see poly-, -gon

Other words from polygon

  • po·lyg·o·nal [puh-lig-uh-nl], /pəˈlɪg ə nl/, adjective
  • po·lyg·o·nal·ly, adverb
  • sub·po·lyg·o·nal, adjective
  • sub·po·lyg·o·nal·ly, adverb

Words Nearby polygon

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use polygon in a sentence

British Dictionary definitions for polygon


/ (ˈpɒlɪˌɡɒn) /

  1. a closed plane figure bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices. The sum of the interior angles is (n –2) × 180° for n sides; the sum of the exterior angles is 360°. A regular polygon has all its sides and angles equal. Specific polygons are named according to the number of sides, such as triangle, pentagon, etc

Origin of polygon

C16: via Latin from Greek polugōnon figure with many angles

Derived forms of polygon

  • polygonal (pəˈlɪɡənəl), adjective
  • polygonally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for polygon


[ pŏlē-gŏn′ ]

  1. A closed plane figure having three or more sides. Triangles, rectangles, and octagons are all examples of polygons.♦ A regular polygon is a polygon all of whose sides are the same length and all of whose interior angles are the same measure.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for polygon


In geometry, a closed figure having three or more sides and lying on one plane.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.