Octagon

Origin

First attested in 1656, from Latin octagonos, from Ancient Greek οκτάγωνος (oktágōnos, "eight-angled"), from ὀκτώ (octō, "eight") + γωνία (gōnía, "angle"). The adjective octagonal was first mentioned from 1571.

Full definition of octagon

Noun

1. (geometry) A polygon with eight sides and eight angles.
2. (martial arts, usually capitalized) The arena for mixed martial arts, particularly as trademarked by the Ultimate Fighting Championship.

Related terms

• octagonal