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English definition of “circumference”

circumference

noun [C or U]     /səˈkʌm.fər.əns/ US  /sɚˈkʌm.fɚ-/
the line surrounding a circular space, or the length of this line: the circumference of a circleProperties of circles and curves the outside edge of an area or object that is round or curved, or the length of this edge: the circumference of an orangeProperties of circles and curvesEdges and extremities of objectsSurfaces of objectsParts of geometrical shapes
(Definition of circumference noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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