From , from circum ("around") + ferō ("I carry").

• (British) enPR: sûkŭm'frəns, IPA: /sɜːˈkʌmfɹəns/, enPR: səkŭm'frəns, IPA: /səˈkʌmfɹəns/
• (America) enPR: sûrkŭm'frəns, IPA: /sɝːˈkʌmfɹəns/, enPR: sərkŭm'frəns, IPA: /sɚˈkʌmfɹəns/
• (Australia) enPR: səkŭm'frəns, IPA: /səˈkamfɹəns/

circumference (plural circumferences)

1. (geometry) The line that bounds a circle or other two-dimensional figure.
2. (geometry) The length of such a line.
3. (obsolete) The surface of a round or spherical object.
4. (graph theory) The length of the longest cycle of a graph.

• (geometry) perimeter, umstroke
• (distance measured around any object): girth
• (distance measured around a race track): lap

• diameter
• radius
• perimeter

• French: circonférence
• German: Umfang
• Italian: circonferenza
• Portuguese: circunferência
• Russian: окру́жность
• Spanish: circunferencia

• French: circonférence
• German: Umfang, Kreisumfang
• Italian: circonferenza
• Portuguese: perímetro
• Russian: длина окружность
• Spanish: circunferencia

• French: circonférence

circumference (circumferences, present participle circumferencing; simple past and past participle circumferenced)

1. (obsolete, transitive) To include in a circular space; to bound.
   • 1650, Thomas Browne, Pseudodoxia Epidemica: […], 2nd edition, London: […] A[braham] Miller, for Edw[ard] Dod and Nath[aniel] Ekins, […], →OCLC ↗:

     Nor is the vigour of this great body included only in itself, or circumferenced by its surface