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Noun: diameter  dI'amitu(r)
  1. The length of a straight line passing through the centre of a circle and connecting two points on the circumference
    - diam
     
  2. A straight line connecting the centre of a circle with two points on its perimeter (or the centre of a sphere with two points on its surface)

Derived forms: diameters

See also: diametral

Type of: length, straight line

Encyclopedia: Diameter

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