decagon

noun

deca·​gon ˈde-kə-ˌgän How to pronounce decagon (audio)
: a plane polygon of 10 angles and 10 sides

Illustration of decagon

Illustration of decagon

Word History

Etymology

New Latin decagonum, from Greek dekagōnon, from deka- deca- + -gōnon -gon

First Known Use

circa 1639, in the meaning defined above

Time Traveler
The first known use of decagon was circa 1639

Dictionary Entries Near decagon

decaffeinize

decagon

decagram

See More Nearby Entries 

Cite this Entry

“Decagon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/decagon. Accessed 21 Dec. 2024.

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Kids Definition

decagon

noun
deca·​gon ˈdek-ə-ˌgän How to pronounce decagon (audio)
: a polygon of 10 angles and 10 sides
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