radius - definition in the Learner's Dictionary - Cambridge Dictionaries Online

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English definition of “radius”

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radius

noun [C]
 
 
/ˈreɪdiəs/ ( plural radii)
POINT a certain distance from a particular point in any direction: Most facilities lie within a two-mile radius of the house.Measurements in general
CIRCLE the distance from the centre of a circle to its edgeProperties of circles and curvesParts of geometrical shapes
(Definition of radius from the Cambridge Learners Dictionary © Cambridge University Press)
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