Circumference
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[编辑] 解释
[编辑] GRE 红宝书
- n.周围, 圆周;周长
- ［英］ n.周围, 圆周 ( line that marks out a circle) ; 周长 ( distance of this)
- ［记］ circum ( 环绕, 周围) +fer ( 带来) +ence -> 带来一圈 -> 周长
[编辑] Webster Collegiate
noun
- Etymology: Middle English, from Middle French & Latin; Middle French, from Latin circumferentia, from circumferre to carry around, from circum- + ferre to carry — more at bear
- Date: 14th century
- 1. the perimeter of a circle
- 2. the external boundary or surface of a figure or object ; periphery
- ? circumferential adjective
