Radius - definition, pronunciation, transcription

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Amer.  |ˈreɪdɪəs|  American pronunciation of the word radius
Brit.  |ˈreɪdɪəs|  British pronunciation of the word radius

noun

- the length of a line segment between the center and circumference of a circle or sphere
- a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
- a circular region whose area is indicated by the length of its radius
they located it within a radius of 2 miles
- the outer and slightly shorter of the two bones of the human forearm
- support consisting of a radial member of a wheel joining the hub to the rim (syn: spoke)

Extra examples

Measure the radius of the circle.

The new museum is expected to draw people from a wide radius.

There are three restaurants within a one-block radius of our apartment.

The shock of the explosion was felt over a radius of forty miles.

There are more than a dozen golf courses within a 15-mile radius of St Andrews.

Within a five mile radius of Ollerton there are several pubs and restaurants.

The radius might be increased a millionfold.

Word forms

noun
singular: radius
plural: radii or radiuses
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