circumference

From Latin circumferentia, from circum (“around”) + ferō (“I carry”).

• (UK) IPA^(key): /sɜːˈkʌm.fɹəns/
• (US) IPA^(key): /sɝːˈkʌm.fɹəns/

• Audio (US)

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• Audio (UK)

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• Rhymes: -ɛns

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

circumference (third-person singular simple present circumferences, present participle circumferencing, simple past and past participle circumferenced)

1. (obsolete, transitive) To include in a circular space; to bound.

   (Can we find and add a quotation of Sir Thomas Browne to this entry?)