9-gon

noun

noun ·Rare ·Advanced level

Definitions

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

Synonyms

All synonyms
enneagonnonagon

Etymology

From 9 + -gon.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.