- The definition of an octagon is an eight-sided, eight-angled figure.
An example of an octagon is the shape of a stop sign in the US.
This stop sign is an octagon.
octagon definition by Webster's New World
Origin: Classical Latin octagonum ; from Classical Greek oktagōnos, eight-cornered: see octa- and amp; -gon
octagon definition by American Heritage Dictionary
octagon - Cultural Definition
A polygon having eight sides.
octagon - Science Definition
- octagonal octagonal adjective