|
| ra·di·us [ ráydee əss ] (plural ra·di·i [ ráydee ] or ra·di·us·es) |
noun |
|
| Definition: |
| |
1. mathematics line from center: a straight line extending from the center of a circle to its edge or from the center of a sphere to its surface.
Symbol r
|
2. mathematics length of radius: the length of a radius.
Symbol r
|
3. circular area: an area enclosed by a circle that has a radius of a particular length
  all the houses within a radius of 2 miles of the explosion
|
4. range of effectiveness or influence: the area or range within which somebody or something can act, work, or exert influence effectively
beyond the radius of the governor's influence
|
5. anatomy bone in arm or forelimb: the shorter and thicker of the two bones in the human forearm, the one on the thumb side, or the equivalent bone in the lower forelimbs of animals
|
6. radiating part: a radiating line, part, or structure
|
| [Late 16th century. < Latin, "staff, spoke, ray, beam of light"] |
Hotmail
