tetragonal

From tetragon + -al.

• IPA^(key): /tɛˈtɹæɡənəl/

• Audio (Southern England):

  (file)

• Rhymes: -æɡənəl

tetragonal (not comparable)

1. Having four sides, like a tetragon.

   Synonym: quadrilateral

2. (crystallography) Having two equal axes and one unequal, and all angles 90°.
   • 1895, Nevil Story-Maskelyne, Crystallography: A Treatise on the Morphology of Crystals, page 255:

     The eight normals of the tetragonal scalenohedron may carry the eight faces of a semiform in other ways than asymmetrically as regards the systematic planes.

• triclinic
• monoclinic
• orthorhombic
• hexagonal
• rhombohedral
• cubic

From tetràgon +‎ -al.

• IPA^(key): (Central) [tə.tɾə.ɣuˈnal]
• IPA^(key): (Balearic) [tə.tɾə.ɣoˈnal]
• IPA^(key): (Valencia) [te.tɾa.ɣoˈnal]

tetragonal m or f (masculine and feminine plural tetragonals)

1. tetragonal, quadrilateral

   Synonyms: tetràgon, quadrilàter

• “tetragonal”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “tetragonal”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026
• “tetragonal” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• Alcover, Antoni Maria; Moll, Francesc de Borja (1963), “tetragonal”, in Diccionari català-valencià-balear (in Catalan)

From tetrágono +‎ -al.

tetragonal m or f (plural tetragonais)

1. tetragonal

• “tetragonal”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2026

• Audio (Germany (Berlin)):

  (file)

• Rhymes: -aːl

tetragonal (strong nominative masculine singular tetragonaler, not comparable)

1. (crystallography) tetragonal

   Synonym: viereckig

• trigonal
• hexagonal

• “tetragonal”, in Digitales Wörterbuch der deutschen Sprache‎^[1] (in German)
• “tetragonal” in Duden online

Borrowed from French tétragonale. By surface analysis, tetragon +‎ -al.

tetragonal m or n (feminine singular tetragonală, masculine plural tetragonali, feminine/neuter plural tetragonale)

1. tetragonal

From tetrágono +‎ -al.

• IPA^(key): /tetɾaɡoˈnal/ [t̪e.t̪ɾa.ɣ̞oˈnal]
• Rhymes: -al
• Syllabification: te‧tra‧go‧nal

tetragonal m or f (masculine and feminine plural tetragonales)

1. tetragonal

• “tetragonal”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025