'disk-shaped' originates from the combination of 'disk' and 'shaped', where 'disk' refers to a flat, circular object and 'shaped' indicates the form or outline.

'disk' comes from the Latin word 'discus', which referred to a flat, circular plate, and 'shaped' is derived from the Old English 'sceapian', meaning to form or create.

Initially, 'disk' referred to a physical object, but over time, 'disk-shaped' evolved to describe anything resembling a disk in form.