English

A regular enneagon

Noun

enneagon ‎(plural enneagons)

1. (geometry) A polygon with nine sides; a nonagon.

Synonyms

• nonagon

Usage notes

• While enneagon is etymologically consistent with pentagon, hexagon, etc., in that it uses a Greek prefix and suffix as opposed to a Latin prefix and a Greek suffix, its use is rare; nonagon is the more common term.

Translations

Related terms

• enneagonal

External links

• enneagon on Wikipedia.Wikipedia