octagonal

American  

[ok-tag-uh-nl] / ɒkˈtæg ə nl /

adjective

1. having eight angles and eight sides.

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octagonal British  

/ ɒkˈtæɡənəl /

adjective

1. having eight sides and eight angles

2. of or relating to an octagon

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Other Word Forms

• octagonally adverb

Etymology

Origin of octagonal

1565–75; octagon + -al ¹, replacing earlier octogonal < New Latin octōgōnālis, equivalent to octō- octo- + Greek gōn ( ía ) angle + -ālis -al ¹

Example Sentences

Original plans called for an octagonal building with a grand piano.

From The Wall Street Journal

An octagonal tower set over four floors, Draper's Windmill is a special place for Robin Colyer from Kent.

From BBC

The gothic building with its octagonal tower was once home to Hammer Horror Studios.

From BBC

Of all the historical monuments in Puglia, it is the inland landmark of Castel del Monte, a hilltop octagonal castle, that has become a national symbol, finding its way onto stamps and money.

From The Wall Street Journal

There’s dark woodwork, octagonal pillars, curlicues of ironwork in the old-fashioned windows, carved details of garlands and flowers and urns.

From Seattle Times