nonagon

non·a·gon
N1O1N1A1G2O1N1
Canada, US/ˈnɑn.ə.ɡɑn/UK/ˈnɒn.ə.ɡən/

noun

A polygon with nine sides and nine angles.

“Meronyms: angle, side; see also Thesaurus:polygon”

Similar
9-gonenneagon
Scrabble 8
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Meanings

nounnonagon (plural nonagons)

plural nonagons

  1. geometryA polygon with nine sides and nine angles.

    Meronyms: angle, side; see also Thesaurus:polygon

    Synonyms: 9-gon, enneagon

Synonyms & antonyms

nounA polygon with nine sides and nine angles.

Similar
9-gonenneagon
Also see
9-gonenneagon

Origin

From nona- + -gon.

Full word history & related roots →

Translations

Bengali নবভুজ
  • নবভুজ (nobobhuj)A polygon with nine sides and nine angles
Bulgarian деветоъгълник
  • деветоъгълник (devetoăgălnik)A polygon with nine sides and nine angles
Catalan enneàgon
  • enneàgonA polygon with nine sides and nine angles
Chinese Mandarin 九邊形 /九边形
  • 九邊形 /九边形 (jiǔbiānxíng)A polygon with nine sides and nine angles
Czech devítiúhelník
  • devítiúhelníkA polygon with nine sides and nine angles
Dutch negenhoek
  • negenhoekA polygon with nine sides and nine angles
Esperanto naŭlatero
  • naŭlateroA polygon with nine sides and nine angles
Finnish yhdeksänkulmio
  • yhdeksänkulmioA polygon with nine sides and nine angles
French nonagone
  • nonagoneA polygon with nine sides and nine angles
German Nonagon, Neuneck
  • NonagonA polygon with nine sides and nine angles
  • NeuneckA polygon with nine sides and nine angles
Greek εννεάγωνο, εννιάγωνο
  • εννεάγωνο (enneágono)A polygon with nine sides and nine angles
  • εννιάγωνο (enniágono)A polygon with nine sides and nine angles
Hebrew מתושע
  • מתושע (metushá)A polygon with nine sides and nine angles
Hindi नवकोण
  • नवकोण (navkoṇ)A polygon with nine sides and nine angles
Hungarian kilencszög
  • kilencszögA polygon with nine sides and nine angles
Icelandic níhyrningur
  • níhyrningurA polygon with nine sides and nine angles
Italian nonagono, ennagono
  • nonagonoA polygon with nine sides and nine angles
  • ennagonoA polygon with nine sides and nine angles
Japanese 九角形
  • 九角形 (kyūkakukei)A polygon with nine sides and nine angles
Korean 구각형
  • 구각형 (gugakhyeong)A polygon with nine sides and nine angles
Malay nonagon
  • nonagonA polygon with nine sides and nine angles
Polish dziewięciokąt
  • dziewięciokątA polygon with nine sides and nine angles
Portuguese eneágono
  • eneágonoA polygon with nine sides and nine angles
Romanian eneagon
  • eneagonA polygon with nine sides and nine angles
Russian девятиуго́льник
  • девятиуго́льник (devjatiugólʹnik)A polygon with nine sides and nine angles
Spanish eneágono, nonágono
  • eneágonoA polygon with nine sides and nine angles
  • nonágonoA polygon with nine sides and nine angles
Swedish nonagon, niohörning
  • nonagonA polygon with nine sides and nine angles
  • niohörningA polygon with nine sides and nine angles
Tagalog samsiha, nonagono
  • samsihaA polygon with nine sides and nine angles
  • nonagonoA polygon with nine sides and nine angles
  • nonagonA polygon with nine sides and nine angles
Thai เก้าเหลี่ยม
  • เก้าเหลี่ยม (gâao-lìiam)A polygon with nine sides and nine angles
Turkish dokuzgen
  • dokuzgenA polygon with nine sides and nine angles
Ukrainian дев'ятикутник
  • дев'ятикутник (devʺjatykutnyk)A polygon with nine sides and nine angles
Cite this entry
APA

nonagon. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/nonagon

MLA

“nonagon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nonagon. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “nonagon,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/nonagon.

Source: nonagon on Wiktionary, CC BY-SA 4.0.