## RADIUS

### Radius

In classical geometry, the**radius**of a circle or sphere is the length of a line segment from its center to its perimeter. The name comes from Latin

*radius*, meaning "ray" but also the spoke of a chariot wheel. The plural of

*radius*can be either

*radii*or the conventional English plural

*radiuses*. The typical abbreviation and mathematic variable name for "radius" is

**r**. By extension, the diameter

**d**is defined as twice the radius:

*The above text is a snippet from Wikipedia: Radius*

and as such is available under the Creative Commons Attribution/Share-Alike License.

and as such is available under the Creative Commons Attribution/Share-Alike License.

### radius

#### Noun

- The long bone in the forearm, on the side of the thumb.
- The lighter bone (or fused portion of bone) in the forelimb of an animal.
- A line segment between any point on the circumference of a circle and its center/centre.
- The length of this line segment.

*The above text is a snippet from Wiktionary: radius*

and as such is available under the Creative Commons Attribution/Share-Alike License.

and as such is available under the Creative Commons Attribution/Share-Alike License.