| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024cir•cum•fer•ence /sɚˈkʌmfərəns/USA pronunciation n. [countable]- Mathematicsthe outer boundary, esp. of a circular area;
perimeter: We walked around the circumference of the lake. - Mathematicsthe length of such a boundary:The circumference of a circle is equal to π times the diameter.
See -fer-. WordReference Random House Unabridged Dictionary of American English © 2024cir•cum•fer•ence (sər kum′fər əns),USA pronunciation n. - Mathematicsthe outer boundary, esp. of a circular area;
perimeter:the circumference of a circle. - Mathematicsthe length of such a boundary:a one-mile circumference.
- the area within a bounding line:the vast circumference of his mind.
- Late Latin circumferentia, equivalent. to circum- circum- + fer- (stem of ferre to carry) + -entia -ence
- Middle English 1350–1400
- 1.See corresponding entry in Unabridged periphery, circuit.
Collins Concise English Dictionary © HarperCollins Publishers:: circumference /səˈkʌmfərəns/ n - the boundary of a specific area or geometric figure, esp of a circle
- the length of a closed geometric curve, esp of a circle. The circumference of a circle is equal to the diameter multiplied by π
Etymology: 14th Century: from Old French circonference, from Latin circumferre to carry around, from circum- + ferre to bearcircumferential /səˌkʌmfəˈrɛnʃəl/ adj cirˌcumferˈentially adv |