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TOEFL IELTS BNC: 15114 COCA: 15774

circumference

Word family
Related topics: Maths, Measurement
cir·cum·fer·ence /səˈkʌmfərəns $ sər-/ noun  
[countableC usually singular, uncountableU]HM the distance or measurement around the outside of a circle or any round shape 圆周;周长 diameter, perimeter, radius
circumference of
 the circumference of the Earth
地球的周长
in circumference
 The island is only nine miles in circumference.
这座岛屿的环岛周长只有九英里。
5 see picture at 见图 circle1
Examples from the Corpus
Origin circumference
(1300-1400) Old French Latin circumferentia, from circumferre to carry around, from circum- (CIRCUM-) + ferre to carry
cir·cum·fer·ence noun
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