What is the meaning of radius?

noun

  • The length of a line segment between the center and circumference of a circle or sphere.
    • synonyms: r
  • A straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere. )
  • A circular region whose area is indicated by the length of its radius.
    • usage: "they located it within a radius of 2 miles"
  • The outer and slightly shorter of the two bones of the human forearm.
  • Support consisting of a radial member of a wheel joining the hub to the rim.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). Radius. Retrieved September 20, 2026, from http://smartdefine.org/radius/definitions/1211614
ChicagoWordNet. 2010. "Radius" http://smartdefine.org/radius/definitions/1211614 (accessed September 20, 2026).
HarvardWordNet 2010, Radius, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/radius/definitions/1211614>.
MLAWordNet. "Radius" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/radius/definitions/1211614>
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