Using the term, "centroidal axis"

Is this term commonly used to describe the axis which, for a disk, passes though the center of the disk and is normal to the circular cross-section of the disk? I've only heard it used to describe the longitudinal axis of a beam or shaft, I'm not sure if I've ever heard it used in this context. I was going to use it in a report but I want to make sure its an accurate use of the term.

Thanks in advance for any help.

Another term is "axis of symmetry " for an axis through an object. That axis passes through the centroid

centroidal axis

Is this term commonly used to describe the axis which, for a disk, passes though the center of the disk and is normal to the circular cross-section of the disk? I've only heard it used to describe the longitudinal axis of a beam or shaft, I'm not sure if I've ever heard it used in this context. I was going to use it in a report but I want to make sure its an accurate use of the term.

A beam or shaft can be a long cylinder or long rectangle.
If the beam or shaft is a long cylinder, the cross section is a circle.
The thickness of a disk is the length or height of a cylinder.
So, the centroidal axis is the line perpendicular to the cross section and passing through the center of the circle.