# 9-gon

> English word · Noun

## Definitions
1. Synonym of enneagon: A polygon with nine sides; a nonagon.

## Etymology
From 9 + -gon.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/9-gon