the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > octagonal (7)
Having eight equal sides; in the form of a regular octagon, octagonal.
Having the form of an octagon; eight-sided.
Of or belonging to an octagon.
Having eight angles, octagonal. Obsolete.
Having eight angles, octagonal.
eight-sided; formed of eight straight lines.