A circular pattern means a shape, arrangement, or movement that repeats in a circular or rounded form. It is like a cycle or loop where things connect to form a circle. Full definition
Arrange mango slices in circular pattern at the bottom of the pan. (easydessert.org)
If you use too high a speed you may find that your buffer spins out of control, leaving funky circular patterns on your cabinets. (oldthingsnewblog.com)
Arrange the apple slices in a decorative circular pattern around the bottom of the pan, starting in the center and working your way out. (outside-oslo.com)