octagon

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English[edit]

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Etymology[edit]

An octagon

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.

Noun[edit]

octagon (plural octagons)

  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 UFC.

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