octagonal

[ ok-tag-uh-nl ]

adjective

1. having eight angles and eight sides.

octagonal

/ ɒkˈtæɡənəl /

adjective

1. having eight sides and eight angles
2. of or relating to an octagon

Derived Forms

• ocˈtagonally, adverb

Other Words From

• oc·tago·nal·ly adverb

Word History and Origins

Origin of octagonal¹

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

Example Sentences

By generation 36, it was clear that the pattern was not circular but rather octagonal.

From FiveThirtyEight

At the University of Reading farm, the researchers laid out about 26-foot octagonal rings.

From Popular-Science

Later, the square tower was crowned with an octagonal turret, sometimes with a conical roof, as in Cremona and Modena cathedrals.

From Project Gutenberg

The angles are emphasized by octagonal projections, the panelling of which seems to have ruled that of the whole structure.

From Project Gutenberg

In the 16th century an octagonal lantern in two strings crowned with a conical roof was added.

From Project Gutenberg

An octagonal tower of two storeys rises above the corbelled eaves.

From Project Gutenberg

In the center of this is an octagonal area inclosed by a second line of ramparts or walls.

From Project Gutenberg