What does "octagonal" mean?

Shaped like an octagon, in having eight sides and eight angles.

How do you pronounce "octagonal"?

Pronounced //ɑkˈtæɡənəl//.

Common synonyms include: octangular, decagonal, dodecagonal, dodecahedral, eight-faceted, eight-part.

/ɑkˈtæɡənəl/ adj

adj ·Rare ·Advanced level

Adjective

1
Shaped like an octagon, in having eight sides and eight angles. not-comparable
"Near Smeinogorsk an octagonal tumulus has been found containing the corpse of a horse near a rectangular one with a human corpse, both within stone circles."

Adjective

"At the convocation, all the faculty and deans wore their doctoral regalia and octagonal hats."

From octagon + -al.

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