octagonal

[ ok-tag-uh-nl ]
/ ɒkˈtæg ə nl /
SEE SYNONYMS FOR octagonal ON THESAURUS.COM

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

Words nearby octagonal

octad, octadecanoic acid, octagon, octagon house, octagon scale, octagonal, octahedral, octahedrite, octahedron, octal, octal notation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Words related to octagonal

octennial

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
[ ŏk′tə-gŏn′ ]

A polygon having eight sides.

Other words from octagon

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