# pentagonal
## English
### Etymology

From pentagon +‎ -al.

### Pronunciation

* IPA: /pɛnˈtæɡənəl/
* Audio (Canada):(file)

### Adjective

pentagonal (comparative more pentagonal, superlative most pentagonal)
* 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

* pentagonal prism

#### Translations
### Noun

pentagonal (plural pentagonals)
* 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: (Central) [pən.tə.ɣuˈnal]
* IPA: (Balearic) [pən.tə.ɣoˈnal]
* IPA: (Valencia) [pen.ta.ɣoˈnal]
* Rhymes: -al

### Adjective

pentagonal m or f (masculine and feminine plural pentagonals)
* 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, segona edició, Institut d’Estudis Catalans.

## French
### Etymology

From pentagone +‎ -al.

### Pronunciation

* IPA: /pɛ̃.ta.ɡɔ.nal/
* Audio:(file)

### Adjective

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

### Further reading

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

## Portuguese
### Etymology

From pentágono (“pentagon”) +‎ -al (“of or relating to”).

### Pronunciation

* (Brazil) IPA: /pẽ.ta.ɡoˈnaw/ [pẽ.ta.ɡoˈnaʊ̯]
* (Portugal) IPA: /pẽ.tɐ.ɡuˈnal/ [pẽ.tɐ.ɣuˈnaɫ]
* (Portugal) IPA: /pẽ.tɐ.ɡuˈnal/ [pẽ.tɐ.ɣuˈnaɫ]
** (Southern Portugal) IPA: /pẽ.tɐ.ɡuˈna.li/ [pẽ.tɐ.ɣuˈna.li]
* Hyphenation: pen‧ta‧go‧nal

### Adjective

pentagonal m or f (plural pentagonais)
* pentagonal (of, relating to, or shaped like a pentagon)

#### Related terms

* pentágono

### References

* ↑ “pentagonal”, in Dicionário infopédia da Língua Portuguesa (in Portuguese), Porto: Porto Editora, 2003–2025
* ↑ “pentagonal”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2025

### Further reading

* “pentagonal”, in iDicionário Aulete (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2025
* “pentagonal”, in Dicionário inFormal (in Portuguese), 2006–2025
* “pentagonal” in Dicionário Aberto based on Novo Diccionário da Língua Portuguesa de Cândido de Figueiredo, 1913
* “pentagonal”, in Michaelis Dicionário Brasileiro da Língua Portuguesa (in Portuguese), São Paulo: Editora Melhoramentos, 2015–2025

## Romanian
### Etymology

From pentagon +‎ -al.

### Adjective

pentagonal m or n (feminine singular pentagonală, masculine plural pentagonali, feminine and neuter plural pentagonale)
* pentagonal

#### Declension
## Spanish
### Etymology

From pentágono +‎ -al.

### Pronunciation

* IPA: /pentaɡoˈnal/ [pẽn̪.t̪a.ɣ̞oˈnal]
* Rhymes: -al
* Syllabification: pen‧ta‧go‧nal

### Adjective

pentagonal m or f (masculine and feminine plural pentagonales)
* pentagonal
    Synonym: pentágono

### Further reading

* “pentagonal”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10