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radius

Definition:
1. The length of a line segment between the center and circumference of a circle or sphere.
2. A straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere.
3. A circular region whose area is indicated by the length of its radius.
4. The outer and slightly shorter of the two bones of the human forearm.
5. Support consisting of a radial member of a wheel joining the hub to the rim.

radius

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