Word.ws English Dictionary

18-gon

18-gon noun: synonym of octadecagon: A polygon with 18 sides and 18 vertices.

Noun

18-gon (plural 18-gons)

  1. (rare) Synonym of octadecagon: A polygon with 18 sides and 18 vertices.
    Synonyms:
    octadecagon

Synonyms of 18-gon

Forms of 18-gon

plural18-gons

Origin of 18-gon

From 18 + -gon.

Questions about 18-gon

What does 18-gon mean?
18-gon means synonym of octadecagon: A polygon with 18 sides and 18 vertices.
What part of speech is 18-gon?
18-gon is a noun.
What is the plural of 18-gon?
The plural of 18-gon is 18-gons.

Words near 18-gon in the dictionary

  1. 17ᵗʰ
  2. 18
  3. 18 holes
  4. 18+
  5. 18-crown-6
  6. 18-gon
  7. 18-gons
  8. 18-wheeler
  9. 18-wheelers
  10. 18-yard box
  11. 18-yard boxes

Source and license

Adapted from Wiktionary: 18-gon (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “18-gon.” Word.ws, https://word.ws/18-gon. Based on Wiktionary, CC BY-SA 4.0.