enneagon

noun

enneagon

noun

UK /ˈɛ.niː.ə.ɡən/

Etymology From ennea- + -gon.

1

Geometry, Mathematics, Sciences A polygon with nine sides; a nonagon.

Synonyms
9-gon, nonagon, nonangle
Related terms
enneagonal

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.