octagon

[ok-tuh-gon, -guhn]
noun
a polygon having eight angles and eight sides.
Also called octangle.


Origin:
1650–60; < Latin octagōnon < Greek oktágōnon, noun use of neuter of oktágōnos octangular; see octa-, -gon

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To octagon
Collins
World English Dictionary
octagon or (less commonly) octangle (ˈɒktəɡən)
 
n
a polygon having eight sides
 
[C17: via Latin from Greek oktagōnos, having eight angles]
 
octangle or (less commonly) octangle
 
n
 
[C17: via Latin from Greek oktagōnos, having eight angles]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

octagon
1650s, from L. octagonos, from Gk. oktagononos, lit. "eight-angled," from okta- comb. form of okto "eight" (see eight) + gonia "angle," related to gony "knee" (see knee).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
octagon   (ŏk'tə-gŏn')  Pronunciation Key 
A polygon having eight sides.

octagonal adjective (ŏk-tāg'ə-nəl)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary

octagon definition


A polygon having eight sides.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences
People waited for a chance to enter the octagon and pose with a championship belt slung over their shoulder.
The first stop is at a chapel-size octagon of screens.
It starts as a square inside another square, then an octagon, then a circle.
The fort was three-eights of an octagon at the top of a cliff.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;