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


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

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. 2020

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