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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The first-round knockout was a jarring return to the octagon. Jenny Catlin, New York Times, 21 June 2025 General view of the UFC 238 octagon at United Center on June 8, 2019 in Chicago, Illinois. Ben Verbrugge, MSNBC Newsweek, 7 June 2025 Musk has been high-profile guest for some of Trump's previous visits to the octagon, but the pair had a public falling-out this week after Musk's departure from the Trump administration. Kathryn Palmer, USA Today, 7 June 2025 Its dish was made up of shiny panels assembled into an octagon. Sarah Scoles, Scientific American, 28 May 2025 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 1 Jul. 2025.

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

More from Merriam-Webster on octagon

Last Updated: - Updated example sentences
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