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Meaning & Definition of Radius in English

English

Radius

/rediəs/

noun

1. The length of a line segment between the center and circumference of a circle or sphere

    synonym:
  • radius
  • ,
  • r

2. A straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)

    synonym:
  • radius

3. A circular region whose area is indicated by the length of its radius

  • "They located it within a radius of 2 miles"
    synonym:
  • radius

4. The outer and slightly shorter of the two bones of the human forearm

    synonym:
  • radius

5. Support consisting of a radial member of a wheel joining the hub to the rim

    synonym:
  • spoke
  • ,
  • wheel spoke
  • ,
  • radius