octagonal

[ ok-tag-uh-nl ]
/ ɒkˈtæg ə nl /

adjective

having eight angles and eight sides.

Nearby words

  1. octad,
  2. octadecanoic acid,
  3. octagon,
  4. octagon house,
  5. octagon scale,
  6. octagonally,
  7. octahedral,
  8. octahedrite,
  9. octahedron,
  10. octal

Origin of octagonal

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

Related formsoc·tag·o·nal·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples 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 Formsoctagonally, 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

Word Origin and History for octagonal

octagonal

adj.

1570s, from octagon + -al (1).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for octagonal

octagon

[ ŏktə-gŏn′ ]

A polygon having eight sides.
Related formsoctagonal adjective (ŏk-tăgə-nəl)

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