D defs.my
Entry 4 senses · 2 variants Webster, 1913

Circumference

/sərkŭm'frəns/ · Cir·cum·fer·ence · IPA /sɚˈkʌmfɹəns/
01 n. The line that goes round or encompasses a circular figure; a periphery.
  1. 1.
    The line that goes round or encompasses a circular figure; a periphery.
  2. 2.
    A circle; anything circular.
    “His ponderous shield . . . Behind him cast. The broad circumference Hung on his shoulders like the moon.” Milton.
  3. 3.
    The external surface of a sphere, or of any orbicular body.
02 v. t. To include in a circular space; to bound.
  1. 1.
    To include in a circular space; to bound.[Obs.]