octagonal

[ ok-tag-uh-nl ]
/ ɒkˈtæg ə nl /

adjective

having eight angles and eight sides.

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Origin of octagonal

1565–75; octagon + -al1, replacing earlier octogonal < New Latin octōgōnālis, equivalent to octō- octo- + Greek gōn(ía) angle + -ālis -al1

OTHER WORDS FROM octagonal

oc·tag·o·nal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for octagonal

British Dictionary definitions for octagonal

octagonal
/ (ɒkˈtæɡənəl) /

adjective

having eight sides and eight angles
of or relating to an octagon

Derived forms of octagonal

octagonally, 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 octagonal

octagon
[ ŏktə-gŏn′ ]

A polygon having eight sides.

Other words from octagon

octagonal adjective (ŏk-tăgə-nəl)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.