circumference

Etymology

From Latin circumferentia, from circum (“around”) + ferō (“I carry”). Displaced native Old English ymbgang.

noun

  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

verb

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

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