Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of octagon is as below...

Octagonal :: Octagonal (a.) Having eight sides and eight angles.

Octagon :: Octagon (n.) A plane figure of eight sides and eight angles.

Pendentive :: Pendentive (n.) The portion of a vault by means of which the square space in the middle of a building is brought to an octagon or circle to receive a cupola.

Octagon :: Octagon (n.) Any structure (as a fortification) or place with eight sides or angles.

Octogonal :: Octogonal (a.) See Octagonal.

Pane :: Pane (n.) A compartment of a surface, or a flat space; hence, one side or face of a building; as, an octagonal tower is said to have eight panes..

Squinsy :: Squinch (n.) A small arch thrown across the corner of a square room to support a superimposed mass, as where an octagonal spire or drum rests upon a square tower; -- called also sconce, and sconcheon..

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