nonagon

noun

no·​na·​gon ˈnō-nə-ˌgän How to pronounce nonagon (audio)
: a polygon of nine angles and nine sides

Examples of nonagon in a Sentence

Recent Examples on the Web The cylindrical core is a dull metallic silver with several irregular nonagon fuel assemblies arranged in its center. Daniel Oberhaus, Wired, 15 May 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nonagon.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin nonus ninth + English -gon — more at noon

First Known Use

circa 1639, in the meaning defined above

Time Traveler
The first known use of nonagon was circa 1639

Dictionary Entries Near nonagon

Cite this Entry

“Nonagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nonagon. Accessed 18 Mar. 2024.

Kids Definition

nonagon

noun
no·​na·​gon ˈnō-nə-ˌgän How to pronounce nonagon (audio)
: a polygon of nine angles and nine sides
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!