(martial arts, usually capitalized) The arena for mixed martial arts, particularly as trademarked by the UFC.
Other Word Forms of Octagon
Origin of 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.
Latin octagōnon from Greek oktagōnon from neuter of oktagōnos octagonal okta- octo- -gōnos angled –gon
From American Heritage Dictionary of the English Language, 5th Edition
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