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A polygon with four sides and four angles; a quadrilateral.

[Late Latin tetragōnum, from Greek tetragōnon, square, from neuter of Greek tetragōnos, having four angles : tetra-, tetra- + -gōnos, angled; see -gon.]

te·trag′o·nal (tĕ-trăg′ə-nəl) adj.
te·trag′o·nal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Mathematics) a less common name for quadrilateral2
[C17: from Greek tetragōnon; see tetra-, -gon]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtɛ trəˌgɒn)

a polygon having four angles or sides; a quadrangle or quadrilateral.
[1620–30; < Greek tetrágōnon]
te•trag′o•nal (-ˈtræg ə nl) adj.
te•trag′o•nal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tetragon - a four-sided polygontetragon - a four-sided polygon      
polygon, polygonal shape - a closed plane figure bounded by straight sides
parallelogram - a quadrilateral whose opposite sides are both parallel and equal in length
trapezium - a quadrilateral with no parallel sides
trapezoid - a quadrilateral with two parallel sides
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈtetrəgən] Ntetrágono m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
References in periodicals archive ?
Salt marshes and muddy seashores of South Korea contain a commonly known edible halophyte species, Limonium tetragonum, which grows in places that come into contact with waters of high salinity [11].
Here the releve 235 had been extracted from that source is presented as the holotype: France, Bretagne, upper infralittoral, growing on rock face, exposed to wave action (cover scale: + to 5): Laminaria hyperborea 4, Chondrus crispus 2, Ellisolandia elongata 2, Laminaria digitata 2, Palmaria palmata 2, Saccorhiza polyschides 2, Callophyllis laciniata 1, Corallina officinalis 1, Cryptopleura ramosa 1, Dilsea carnosa 1, Furcellaria lumbricalis 1, Halurus flosculosus 1, Membranoptera alata 1, Osmundea pinnatifida 1, Calliblepharis jubata +, Callithamnion tetragonum +, Ceramium virgatum +, Chondracanthus acicularis +, Claviclonium ovatum +, Codium tomentosum +, Desmarestia aculeata +, Gelidium pulchellum +, Halurus equisetifolius +, Heterosiphonia plumosa +, Plocamium cartilagineum +.
Syzygium tetragonum Wall is a Chinese folk medicine for the treatment of rheumatism, joint swelling and pain.
Besides these, other species Andrographis paniculata, Exacum tetragonum, E.
stramineum - - Ceratodon purpureus - - Cirriphyllum cirrosum - (2)/2 Conostomum tetragonum - - Desmatodon heimii var.
Punta Remedios, Lira, Carnota, sobre estipe de Saccorhiza polyschides, a 1 m de profundidad, presenta cistocarpos, Audouinella virgatulay Callithamnion tetragonum epifitos, 07-02-1988, J.