noun

octagon

OK-tuhgn

Octagon (noun) means a shape with eight straight sides and eight angles. Example: “The gazebo was built as a perfect octagon.”

noun

A shape with eight straight sides and eight angles.

"The gazebo was built as a perfect octagon."

"Stop signs are one of the most recognizable octagons in everyday life."

The eight-sided fenced arena used for mixed martial arts fights.

"The fighters touched gloves before stepping into the Octagon."

How to use octagon

Learner’s notes

In plain EnglishAn eight-sided shape, or (capitalized) the eight-sided cage used in MMA.

Common pairings

a regular octagon step into the Octagon an octagon-shaped table

Word forms

octagons plural

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The gazebo was built as a perfect _____.

Etymology

From Greek okto- ("eight") plus -gonon ("angled"), the same building blocks found in "pentagon" and "hexagon".

Origin: Greek

Synonyms

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8-gon

Rhymes for octagon

wagon dragon Aragon paragon pentagon tarragon bandwagon pendragon

See all rhymes for octagon →

Frequently asked questions

What does “octagon” mean?

The word “octagon” means a shape with eight straight sides and eight angles. In plain terms, an eight-sided shape, or (capitalized) the eight-sided cage used in MMA.

How do you pronounce “octagon”?

“Octagon” is pronounced OK-tuhgn (/ˈɑktəˌɡɑn/ in IPA).

How do you use “octagon” in a sentence?

Here is “octagon” used in a sentence: “The gazebo was built as a perfect octagon.”

What is another word for “octagon”?

Words with a similar meaning to “octagon” include 8-gon.

What part of speech is “octagon”?

“Octagon” is a noun.

Where does the word “octagon” come from?

The word “octagon” comes from Greek. From Greek okto- ("eight") plus -gonon ("angled"), the same building blocks found in "pentagon" and "hexagon".

How many meanings does “octagon” have?

“Octagon” has 2 distinct senses listed in this dictionary. The most common is: a shape with eight straight sides and eight angles.