octagon

noun

oc·​ta·​gon ˈäk-tə-ˌgän How to pronounce octagon (audio)
: a polygon of eight angles and eight sides
octagonal adjective
octagonally adverb

Examples of octagon in a Sentence

Recent Examples on the Web
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Another potential boxing opponent for the Cameroonian is MVP promoter Paul himself, who stepped into the octagon to celebrate with winners on Saturday. Eduard Cauich, Los Angeles Times, 17 May 2026 Conor McGregor is returning the octagon. ABC News, 16 May 2026 They are equipped to get in the ring or an octagon. Troy Renck, Denver Post, 15 May 2026 Sean Strickland left everything in the octagon at the Prudential Center in Newark, New Jersey on Saturday night, upsetting Khamzat Chimaev to be named UFC middleweight champion once again for his career. Scott Thompson, FOXNews.com, 10 May 2026 See All Example Sentences for octagon

Word History

Etymology

Latin octagonum, from Greek oktagōnon, from okta- + -gōnon -gon

First Known Use

1594, in the meaning defined above

Time Traveler
The first known use of octagon was in 1594

Browse Nearby Words

Cite this Entry

“Octagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/octagon. Accessed 23 May. 2026.

Kids Definition

octagon

noun
oc·​ta·​gon ˈäk-tə-ˌgän How to pronounce octagon (audio)
: a polygon with eight angles and eight sides
octagonal adjective

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