quadrangular

From Middle English quadrangulere, from Late Latin quadrangulāris. Compare Middle French and French quadrangulaire.^[1] By surface analysis, quadr- +‎ -angular.

quadrangular (comparative more quadrangular, superlative most quadrangular)

1. Having the shape of a quadrangle; in the shape of a quadrangle.

   Synonym: (rare) quadrangulate

   Hyponyms: rectangular, square

   Coordinate terms: triangular (3), pentangular (5), hexangular (6)

2. Involving four participants or teams.
   • 1854 May 17, “The State Election.”, in The New York Times‎^[1], New York, N.Y.: The New York Times Company, →ISSN, →OCLC, archived from the original on 5 August 2020:

     We are promised certainly a triangular, and possibly a quadrangular, contest for Governor this Fall.

   • 2009 February 22, Owen Gibson, “ECB may sue players' union over Stanford allegations”, in Alan Rusbridger, editor, The Guardian‎^[2], London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 6 September 2013:

     It is understood they will today consult lawyers about claims in a Sunday newspaper, attributed to a PCA official, that Collier leant on its chief executive, Sean Morris, to increase the pressure on the England players during the Test to sign a revised agreement with Stanford, scrapping the $20m Super Series but agreeing to a new quadrangular tournament at Lord's.

   • 2025 October 17, Leonard Barden, “Chess: Ukraine soldier grandmaster wins gold medal at European team championships”, in Katharine Viner, editor, The Guardian‎^[3], London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 18 October 2025:

     Immediately after the US championship, St Louis will stage an elite quadrangular tournament with the world No 1, Carlsen, the world No 2, Hikaru Nakamura, the world No 3, Caruana, and the reigning world champion, Gukesh Dommaraju.

quadrangular (plural quadrangulars)

1. A competition involving four participants or teams.
   • 1987 March 26, “SportsScope : Olympic Hopefuls Expected to Sail in Flying Dutchman Tourney”, in Los Angeles Times‎^[4], Los Angeles, Calif.: Los Angeles Times Communications, →ISSN, →OCLC, archived from the original on 5 January 2026:

     With his winning shot put and discus marks in the quadrangular, Banich joined three other Bruins who have qualified for the NCAA outdoor championships in June at Baton Rouge, La.

   • 2009 February 22, Owen Gibson, “ECB may sue players' union over Stanford allegations”, in Alan Rusbridger, editor, The Guardian‎^[5], London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 6 September 2013:

     "The PCA president and chief executive seem to have forgotten that not only were they signed up to Stanford's $20m match but that just this month they gave in principle support to a five-year deal for the quadrangular," said one ECB insider.

   • 2025 October 17, Leonard Barden, “Chess: Ukraine soldier grandmaster wins gold medal at European team championships”, in Katharine Viner, editor, The Guardian‎^[6], London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 18 October 2025:

     Quadrangulars are a very rare format, and the only real precedent is St Petersburg 1895-96, with the world champion, Emanuel Lasker, the former champion Wilhelm Steinitz, Russia’s Mikhail Chigorin and USA’s Harry Pillsbury.

Borrowed from Late Latin quadrangulāris.

• Hyphenation: qua‧dran‧gu‧lar

quadrangular m or f (plural quadrangulares)

1. (geometry) quadrangular

• quadrângulo

From Latin quadrangulus +‎ -ar.

• Hyphenation: qua‧dran‧gu‧lar

quadrangular (first-person singular present quadrangulo, first-person singular preterite quadrangulei, past participle quadrangulado)

1. (transitive) to quadrangulate

• “quadrangular”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “quadrangular”, in Dicionário inFormal (in Portuguese), 2006–2026
• “quadrangular” in Dicionário Aberto based on Novo Diccionário da Língua Portuguesa de Cândido de Figueiredo, 1913
• “quadrangular”, in Dicionário infopédia da Lingua Portuguesa (in Portuguese), Porto: Porto Editora, 2003–2026
• “quadrangular”, in Michaelis Dicionário Brasileiro da Língua Portuguesa (in Portuguese), São Paulo: Editora Melhoramentos, 2015–2026, →ISBN
• “quadrangular”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026