# What Is the Definition of Radius?

The word radius has different meanings depending on what you are interested in. For instance, it can refer to the straight line from the centre of a circle or sphere to its circumference. It can also mean the corresponding bone in the foreleg of a vertebrate or a bird's wing.
Q&A Related to "What Is the Definition of Radius"
 If you draw a line from one side of a circle to the other, and that line hits the center, and goes all the way across, it is the diameter. half of that line going from the center http://wiki.answers.com/Q/What_is_the_definition_o...
 Radius:1:the length of a line segment between the center and circumference http://www.chacha.com/question/what-is-the-definit...
 The neck radius has a lot to do with how comfortable you will be playing the guitar. The larger the neck's radius is, the flatter the curve of the neck of your guitar will be. The http://www.ehow.com/facts_7422827_radius-fender-st...
 The radius of the observable universe is about. 47 billion light years. much more than the age of the universe multiplied by the speed of light. Space has been expanding since the http://www.quora.com/What-is-the-radius-of-the-uni...
ra·di·us
[rey-dee-uhs]
NOUN [PLURAL RA·DI·I, RA·DI·US·ES.]
1.
a straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is half the diameter.
2.
the length of such a line.
3.