nonagonal

English

Etymology

Etymology tree

English nonagon

Proto-Indo-European *h₂el-der.?

Proto-Italic *-ālis

Latin -ālisbor.

Old French -albor.

▲

Latin -ālis

Old French -elbor.

▲

Latin -ālisbor.

Middle English -al

English -al

English nonagonal

From nonagon + -al.

Pronunciation

• (UK) IPA^(key): /nɒˈnæɡənəl/
• (US) IPA^(key): /nɑˈnæɡənəl/, /noʊˈnæɡənəl/

• Audio (US):

  (file)

• Rhymes: -æɡənəl

Adjective

nonagonal (not comparable)

1. Having nine sides and nine angles.

Translations

having nine sides and nine angles

• Bengali: নবভুজাকৃতি (nobbhujakriti)
• Catalan: enneagonal (ca)
• Finnish: yhdeksänkulmainen
• Georgian: ცხრაკუთხა (cxraḳutxa)
• Russian: девятиугольный (ru) (devjatiugolʹnyj)
• Spanish: eneágono (es), nonagonal (es)
• Tagalog: samsihain

Anagrams

• nonanalog

Spanish

Pronunciation

• IPA^(key): /nonaɡoˈnal/ [no.na.ɣ̞oˈnal]
• Rhymes: -al
• Syllabification: no‧na‧go‧nal

Adjective

nonagonal m or f (masculine and feminine plural nonagonales)

1. nonagonal

Related terms

• nonágono

Further reading

• “nonagonal”, 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