Definition
'Disc-shaped' means having the shape of a disc. It is an alternative spelling of 'disk-shaped.' The meaning is identical: a flat, circular form, like a plate or CD. The spelling difference lies in 'disc' versus 'disk,' both referring to the same object. Use 'disc-shaped' when you prefer the 'c' spelling. It's a matter of stylistic choice more than anything else. Both terms are widely understood and accepted.