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Definition of Radius


  1. A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.
  2. The preaxial bone of the forearm, or brachium, corresponding to the tibia of the hind limb. See Illust. of Artiodactyla.
  3. A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2.
  4. The barbs of a perfect feather.
  5. Radiating organs, or color-markings, of the radiates.
  6. The movable limb of a sextant or other angular instrument.
More "Radius" Quotations

Radius Translations

radius in Dutch is actieradius, spaakbeen, radius
radius in German is Radius
radius in Italian is raggio
radius in Portuguese is raio
radius in Swedish is radie