Definition of Radius. Meaning of Radius. Synonyms of Radius

Here you will find one or more explanations in English for the word Radius. Also in the bottom left of the page several parts of wikipedia pages related to the word Radius and, of course, Radius synonyms and on the right images related to the word Radius.

Definition of Radius

Radius
Radius Ra"di*us, n.; pl. L. Radii; E. Radiuses. [L., a staff, rod, spoke of a wheel, radius, ray. See Ray a divergent line.] 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. Note: The radius is on the same side of the limb as the thumb, or pollex, and in man it so articulated that its lower end is capable of partial rotation about the ulna. 3. (Bot.) A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2. 4. pl. (Zo["o]l.) (a) The barbs of a perfect feather. (b) Radiating organs, or color-markings, of the radiates. 5. The movable limb of a sextant or other angular instrument. --Knight. Radius bar (Math.), a bar pivoted at one end, about which it swings, and having its other end attached to a piece which it causes to move in a circular arc. Radius of curvature. See under Curvature.

Meaning of Radius from wikipedia

- In cl****ical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also...
- Remote Authentication Dial-In User Service (RADIUS) is a networking protocol, operating on port 1812 that provides centralized Authentication, Authorization...
- Earth radius is the distance from the center of Earth to a point on its surface. Its value ranges from 6,378 km (3,963 mi) at the equator to 6,357 km (3...
- definitions of atomic radius. Three widely used definitions of atomic radius are: Van der Waals radius, ionic radius, and covalent radius. Depending on the...
- The radius or radial bone is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the...
- The Schwarzschild radius (sometimes historically referred to as the gravitational radius) is a physical parameter that shows up in the Schwarzschild solution...
- particles, they possess a measurable size; the root mean square charge radius of a proton is about 0.84–0.87 fm or 0.84×10−15 to 0.87×10−15 m. At sufficiently...
- (Earth radius / Radius of Moon's orbit)2 ] relative to the direct solar illumination that occurs for a full moon. (Earth albedo = 0.367; Earth radius = (polar...
- A radius gauge, also known as a fillet gauge, is a tool used to measure the radius of an object. Radius gauges require a bright light behind the object...
- A radius is a straight line or distance from the center to the edge of a curve. Radius may also refer to: Alexandra Radius (born 1942), Dutch ballerina...
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