Definition of Radius

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

Synonyms of Radius


Antonyms of Radius


No Antonyms Found.

Homophones of Radius


No Homophones Found.