n. | 1. | (Geom.) A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere. | ||||||
2. | (Anat.) The preaxial bone of the forearm, or brachium, corresponding to the tibia of the hind limb. See Illust. of Artiodactyla. | |||||||
3. | (Bot.) A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2. | |||||||
4. | (Zool.) The barbs of a perfect feather. | |||||||
5. | The movable limb of a sextant or other angular instrument.
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Noun | 1. | ![]() Synonyms: r |
2. | radius - a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere) | |
3. | radius - a circular region whose area is indicated by the length of its radius; "they located it within a radius of 2 miles" | |
4. | radius - the outer and slightly shorter of the two bones of the human forearm | |
5. | radius - support consisting of a radial member of a wheel joining the hub to the rim Synonyms: spoke |
RADIUS - Remote Authentication Dial-In User Service |