circumference

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cir·cum·fer·ence (c),

(ser-kŭm'fer-ens), [TA]
The outer boundary, especially of a circular area.
Synonym(s): circumferentia [TA]
[L. circumferentia, a bearing around]

circumference

[surkum′fərens]
Etymology: L, circum, around, ferre, to bear
1 the perimeter or periphery of a circle.
2 a circular plane surface of a joint.

cir·cum·fer·ence

(c) (sĭr-kŭm'fĕr-ĕns) [TA]
The outer boundary, especially of a circular area.
Synonym(s): circumferentia [TA] .
[L. circumferentia, a bearing around]

circumference

(sĭr-kŭm′fĕ-rĕns) [L. circumferentia]
The perimeter of an object or body.