ENNEAGON

Etymology

Noun

enneagon (plural enneagons)

(geometry) A polygon with nine sides; a 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.

Synonyms

• nonagon

Source: Wiktionary


En"ne*a*gon, n. Etym: [Gr. ennéagone.] (Geom.)

Definition: A polygon or plane figure with nine sides and nine angles; a nonagon.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

6 April 2025

KIP

(noun) a gymnastic exercise performed starting from a position with the legs over the upper body and moving to an erect position by arching the back and swinging the legs out and down while forcing the chest upright


coffee icon

Coffee Trivia

In 1884, Angelo Moriondo of Turin, Italy, demonstrated the first working example of an espresso machine.

coffee icon