Circumferential (adjective)

Located around the circumference or perimeter of something; surrounding.

Origin:

Early 17th century: from late latin circumferentia, from circumferent- 'going around', from circum- 'around' + ferre 'to carry'.

Examples:

1. The circumferential road provided easy access to the city's outskirts.
2. The circumferential wall protected the castle from invaders.
3. The circumferential muscles are important for maintaining posture.
4. The circumferential grooves in the tire improved traction.
5. The circumferential band of the tire was made of reinforced rubber for added durability.