Meanings
Synonyms & antonyms
nounA polygon with twenty-one edges and twenty-one angles.
Similar
Also see
Origin
- Ancient Greekεἰκοσιέν“twenty-one”
- Englishicosihenagon
From Ancient Greek εἰκοσιέν (eikosién, “twenty-one”) + -gon, from εἴκοσι (eíkosi) (twenty) + ἕν (hén) (one).
More words from Ancient Greek
Full word history & related roots →Translations
Bulgarian двадесетоедноъгълник
- двадесетоедноъгълник (dvadesetoednoăgălnik)geometry
Chinese Mandarin 二十一邊形 /二十一边形
- 二十一邊形 /二十一边形 (èrshíyī biānxíng)geometry
Czech jednadvacetiúhelník
- jednadvacetiúhelníkgeometry
Dutch eenentwintighoek
- eenentwintighoekgeometry
Esperanto dudekunulatero
- dudekunulaterogeometry
Finnish 21-kulmio (kaksikymmenyksikulmio)
- 21-kulmio (kaksikymmenyksikulmio)geometry
French henicosagone
- henicosagonegeometry
German Einundzwanzigeck
- Einundzwanzigeckgeometry
Hungarian huszonegyszög
- huszonegyszöggeometry
Italian endeicosagono
- endeicosagonogeometry
Japanese 二十一角形
- 二十一角形 (èrshíyījiǎoxíng)geometry
Korean 이십일각형
- 이십일각형 (isibilgakhyeong)geometry
Polish 21-okąt (dwudziestojednokąt)
- 21-okąt (dwudziestojednokąt)geometry
Portuguese hendecoságono
- hendecoságonogeometry
Russian двадцатиодноугольник
- двадцатиодноугольник (dvadcatiodnougolʹnik)geometry
Spanish icosihenágono
- icosihenágonogeometry
Swedish ikosihenagon
- ikosihenagongeometry
Ukrainian двадцятиоднокутник
- двадцятиоднокутник (dvadcjatyodnokutnyk)geometry
Cite this entry
APA
icosihenagon. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/icosihenagon
MLA
“icosihenagon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/icosihenagon. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “icosihenagon,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/icosihenagon.
Source: icosihenagon on Wiktionary, CC BY-SA 4.0.