What Is the Definition of Radius?

Answer

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.
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2 Additional Answers
Ask.com Answer for: what is the definition of radius
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.
any radial or radiating part.
4.
a circular area having an extent determined by the length of the radius from a given or specified central point: every house within a radius of 50 miles.
5.
a field or range of operation or influence.
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Source: Dictionary.com
A line that joins the center of a circle or sphere with any point on the circumference. Also, radius is one half of the diameter of a circle.
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