pentagonal

English

Etymology

From pentagon +‎ -al.

Pronunciation

• IPA^(key): /pɛnˈtæɡənəl/

• Audio (Canada):

  (file)

• Rhymes: -æɡənəl

Adjective

pentagonal (comparative more pentagonal, superlative most pentagonal)

1. Of, relating to, or shaped like a pentagon.
   • 1850, John Radford Young, An introductory treatise on mensuration, in theory and practice, page 115:

     If the base be a triangle, it is called a triangular prism; if a square, a square prism; if a pentagon, a pentagonal prism; and' if the base is any irregular figure, it is called an irregular prism : ...

   • 2018, B Özüdoğru, “Phylogenetic position, taxonomy, distribution, and conservation status of the rare and poorly-known Noccaea rosularis, the generic type of Masmenia …”, in Phytotaxa:

     Seed micromorphology:—Seed coat is laticostate. Epidermal cells are elliptical to irregularly pentagonal. Cell walls are thickened mostly at the corners, the boundaries are raised […]

Derived terms

• pentagonally
• pentagonal prism
• subpentagonal

Translations

of, relating to, or shaped like a pentagon

Bengali: পঞ্চভুজাকৃতি (poncobhujakriti) Bulgarian: петоъгълен (petoǎgǎlen) Catalan: pentagonal (ca) Esperanto: kvinangula Galician: pentagonal Georgian: ხუთკუთხა (xutḳutxa), პენტაგონალური (ṗenṭagonaluri) Greek: Ancient: πεντάγωνος (pentágōnos) Hebrew: מחומש (mekhumásh) Ido: pentagonala Italian: pentagonale (it) Latin: quinquangulus Norwegian: Bokmål: femkantet Portuguese: pentagonal Russian: пятиуго́льный (ru) (pjatiugólʹnyj) Spanish: pentágono (es), pentagonal (es) Tagalog: limsihain

Noun

pentagonal (plural pentagonals)

1. Something having the shape of a pentagon.
   • 1941, Steel, volume 109, page 59:

     Speaking of protection, note that not only are the end pentagonals surrounded by a generous air space, but the entire instrument is insulated, […]

   • 1993, Michael Pfrommer, Metalwork from the Hellenized East: Catalogue of the Collections, page 188:

     The pentagonals with the flowers and the leaves of the central calyx are gilded all over, as is the inner lip of the vessel.

Catalan

Etymology

From pentàgon +‎ -al.

Pronunciation

• IPA^(key): (Central) [pən.tə.ɣuˈnal]
• IPA^(key): (Balearic) [pən.tə.ɣoˈnal]
• IPA^(key): (Valencia) [pen.ta.ɣoˈnal]
• Rhymes: -al

Adjective

pentagonal m or f (masculine and feminine plural pentagonals)

1. pentagonal

Further reading

• “pentagonal” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.
• “pentagonal” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “pentagonal”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
• “pentagonal”, 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

French

Etymology

From pentagone +‎ -al.

Pronunciation

• IPA^(key): /pɛ̃.ta.ɡɔ.nal/

• Audio (France (Lyon)):

  (file)

Adjective

pentagonal (feminine pentagonale, masculine plural pentagonaux, feminine plural pentagonales)

1. pentagonal

Further reading

• “pentagonal”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.