'regularly-shaped' originates from the combination of 'regularly' and 'shaped', where 'regularly' comes from Latin 'regularis', meaning 'consistent' or 'orderly', and 'shaped' from Old English 'sceapian', meaning 'to form'.

'regularis' transformed into the Old French 'reguler', and eventually became the modern English word 'regular'. 'Sceapian' evolved into the modern English 'shape'.

Initially, 'regularly' meant 'in a straight line' and 'shaped' meant 'to form'. Over time, it evolved into its current meaning of 'having a consistent and uniform shape'.