sə(r)|kəm(p)fə|renchəl; ˌsərˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷, ˌsə̄ˌ-, ˌsəiˌ- adjective
Etymology: Latin circumferentia circumference + English -al
: of or relating to the circumference especially of a town or city: as
a. : encircling
circumferential seam welding — Industrial Equipment News
a circumferential highway around a city — U.S. Code
b. : peripheral , skirting
bypass or circumferential roads to enable through traffic to keep out of cities — New Internat'l Year Bk
parkways and circumferential drives — American Builder
these efforts … are nevertheless peripheral, circumferential , apart from the curricular body of knowledge which is central to any educational institution — K.I.Brown
• cir·cum·fer·en·tial·ly -ch(ə)lē, -li adverb