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Definitions of circumference
  1. noun
    the size of something as given by the distance around it

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  2. noun
    the boundary line encompassing an area or object
    "he had walked the full circumference of his land" "a danger to all races over the whole circumference of the globe"

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  3. noun
    the length of the closed curve of a circle
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Definition that contains circumference
  • r the length of a line segment between the center and circumference of a circle or sphere
  • pi the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
  • radius the length of a line segment between the center and circumference of a circle or sphere
  • diameter the length of a straight line passing through the center of a circle and connecting two points on the circumference
  • quadrant a quarter of the circumference of a circle
  • clock golf a form of golf in which you putt from positions arranged on the circumference of a circle around the hole
  • diam the length of a straight line passing through the center of a circle and connecting two points on the circumference
  • quarter-circle a quarter of the circumference of a circle
  • eratosthenes Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)
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