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[te-truh-gon, -guh n] /ˈtɛ trəˌgɒn, -gən/
a polygon having four angles or sides; a quadrangle or quadrilateral.
Origin of tetragon
1620-30; < Greek tetrágōnon. See tetra-, -gon Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for tetragon
Historical Examples
  • A figure that is bounded by four straight lines is termed a quadrangle, quadrilateral or tetragon.

  • 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
  • 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
British Dictionary definitions for tetragon


a less common name for quadrilateral (sense 2)
Word Origin
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
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