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.
Some of the shapes featured are the octagon lily inspired by nature with a star cut at its center; the bead, ideal for crafting chains and links, or the pendeloque, shaped as a teardrop. Andrea Onate, Footwear News, 9 Apr. 2025 One unusual feature of Chesterton’s bandstand is its octagon shape and peaked roof. Jim Woods, Chicago Tribune, 2 Apr. 2025 Long-time staple of the UFC, José Aldo, makes his return to the octagon for his first fight since last October. Ben Verbrugge, MSNBC Newsweek, 11 May 2025 Conor McGregor has long touted his return to the octagon after his first attempt last June came to an unfortunate end due to a training injury. Paulina Dedaj, FOXNews.com, 23 Apr. 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 3 Jun. 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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