RADIUS

Definition

1. noun the length of a line segment between the center and circumference of a circle or sphere. — synonyms: r
2. noun a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere).
3. noun a circular region whose area is indicated by the length of its radius.
4. noun the outer and slightly shorter of the two bones of the human forearm.
5. noun support consisting of a radial member of a wheel joining the hub to the rim. — synonyms: spoke, wheel_spoke