axial

Example:The central column held up the roof.

Definition:Of, relating to, or constituting a center. Situated in or proceeding from the middle; central or centralmost; constituting the essence; fundamental; essential.

Example:The container for the oil was cylindrical in shape.

Definition:Of or pertaining to a cylinder. Also, resembling a cylinder; cylindrical in shape; of a molecule, containing a cylindrical scaffold.

Example:The wheels were connected by radial spokes.

Definition:Of, relating to, or resembling a radius; proceeding from a center in straight lines; radiating, as from a center in straight lines; as, radial spokes; comprising the radii and radii of curvature; being in the direction of a radius.