radius

Noun
  1. The length of a line segment between the center and circumference of a circle or sphere (synset 105109363)
    is a type of: length - the linear extent in space from one end to the other; the longest dimension of something that is fixed in place
    subtypes:
    • semidiameter - the apparent radius of a celestial body when viewed as a disc from the earth
    • radius of curvature - the radius of the circle of curvature; the absolute value of the reciprocal of the curvature of a curve at a given point
    is a part of: diam, diameter - the length of a straight line passing through the center of a circle and connecting two points on the circumference
    same as: r
  2. A straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere) (synset 113894177)
    is a type of: straight line - a line traced by a point traveling in a constant direction; a line of zero curvature
  3. A circular region whose area is indicated by the length of its radius (synset 108646153)
    "they located it within a radius of 2 miles"
    is a type of: part, region - the extended spatial location of something
  4. The outer and slightly shorter of the two bones of the human forearm (synset 105601073)
    is a type of: arm bone - a bone in the arm
    is a part of: forearm - the part of the superior limb between the elbow and the wrist
  5. Support consisting of a radial member of a wheel joining the hub to the rim (synset 104290516)
    is a type of: support - any device that bears the weight of another thing
    is a part of:
    same as: spoke, wheel spoke

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