/ səˈkʌmfərəns; NAmE sərˈk-/ noun
[ C , U ] a line that goes around a circle or any other curved shape; the length of this line :
the circumference of the earth
The earth is almost 25 000 miles in circumference .
—picture at circle
—compare perimeter
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WORD ORIGIN
late Middle English : from Old French circonference , from Latin circumferentia , from circum around, about + ferre carry, bear.