nonagonal

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UK/nɒˈnæɡənəl/US/nɑˈnæɡənəl/US/noʊˈnæɡənəl/

adjective

Having nine sides and nine angles.

OriginProto-Indo-European *h₂élisder.? ← English nonagon →
Scrabble 10
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Meanings

adjectivenonagonal (not comparable)
  1. not comparableHaving nine sides and nine angles.

Origin

  1. Englishnonagon
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. Englishnonagonal

From nonagon + -al.

Full word history & related roots →

Translations

Bengali নবভুজাকৃতি
  • নবভুজাকৃতি (nobbhujakriti)having nine sides and nine angles
Catalan enneagonal
  • enneagonalhaving nine sides and nine angles
Finnish yhdeksänkulmainen
  • yhdeksänkulmainenhaving nine sides and nine angles
Russian девятиугольный
  • девятиугольный (devjatiugolʹnyj)having nine sides and nine angles
Spanish eneágono, nonagonal
  • eneágonohaving nine sides and nine angles
  • nonagonalhaving nine sides and nine angles
Tagalog samsihain
  • samsihainhaving nine sides and nine angles

Rhymes & wordplay

Rhymes with nonagonal

diagonalhexagonaloctagonaltetragonalpentagonaldecagonalheptagonalsexagonaltriagonal
All rhymes →

Anagrams

nonanalog
Cite this entry
APA

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

MLA

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

Chicago

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

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