decagon

[ dek-uh-gon, -guhn ]
/ ˈdɛk əˌgɒn, -gən /

noun Geometry.

a polygon having ten angles and ten sides.

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Origin of decagon

From the Medieval Latin word decagōnum, dating back to 1565–75. See deca-, -gon

OTHER WORDS FROM decagon

de·cag·o·nal [duh-kag-uh-nl], /dəˈkæg ə nl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for decagon

British Dictionary definitions for decagon

decagon
/ (ˈdɛkəˌɡɒn) /

noun

a polygon having ten sides

Derived forms of decagon

decagonal (dɪˈkæɡənəl), adjectivedecagonally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for decagon

decagon
[ dĕkə-gŏn′ ]

A polygon having ten sides.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.