[ te-truh-gon, -guh n ]
/ ˈtɛ trəˌgɒn, -gən /


a polygon having four angles or sides; a quadrangle or quadrilateral.

Nearby words

  1. tetraethyllead,
  2. tetrafluoride,
  3. tetrafluoroethene,
  4. tetrafluoroethylene,
  5. tetrafunctional,
  6. tetragonal,
  7. tetragonal trisoctahedron,
  8. tetragonally,
  9. tetragram,
  10. tetragrammaton

Origin of tetragon

From the Greek word tetrágōnon, dating back to 1620–30. See tetra-, -gon

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tetragon

  • A figure that is bounded by four straight lines is termed a quadrangle, quadrilateral or tetragon.

  • It is the tetragon with the Aragon bars, given as a shield of arms by James I. to the city he had conquered.

    Spanish Arms and Armour|Albert F. Calvert
  • Thus we speak of a pentagon but not of a tetragon or a trigon, although both words are correct in form.

    The Teaching of Geometry|David Eugene Smith
  • It was long, built around two sections of the tetragon, and with low divans beneath the view windows.

    Operation Haystack|Frank Patrick Herbert

British Dictionary definitions for tetragon


/ (ˈtɛtrəˌɡɒn) /


a less common name for quadrilateral (def. 2)

Word Origin for tetragon

C17: from Greek tetragōnon; see tetra-, -gon

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