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octagonal

[ok-tag-uh-nl] /ɒkˈtæg ə nl/
adjective
1.
having eight angles and eight sides.
Origin
1565-1575
1565-75; octagon + -al, replacing earlier octogonal < New Latin octōgōnālis, equivalent to octō- octo- + Greek gōn(ía) angle + -ālis -al1
Related forms
octagonally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for octagonally

octagonal

/ɒkˈtæɡənəl/
adjective
1.
having eight sides and eight angles
2.
of or relating to an octagon
Derived Forms
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
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Word Origin and History for octagonally

octagonal

adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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