Radius | Mean of radius in English Dictionary

/ˈreɪdijəs/

• Noun
• a straight line from the center of a circle or sphere to any point on the outer edge
1. Measure the radius of the circle.
• the length of this line
1. a radius of 10 inches
• an area that goes outward in all directions from a particular place
1. The new museum is expected to draw people from a wide radius.
2. More than 100,000 students live within a 10-mile radius of the university. [=within 10 miles of the university]
3. There are three restaurants within a one-block radius of our apartment.

• the bone in the lower part of your arm on the same side as your thumb