RADIUS


Meaning of RADIUS in English

[noun] [C] [plural] radii - (the length of) a straight line joining the centre of a circle to its edge or the centre of a sphere to its surfaceThe radius of this wheel is 30 cm.This wheel has a radius of 30 cm.(figurative) The station, shopping centre and school lie within a one-mile radius of the house (= are all less than a mile away from it).See picture: Shapes

Cambridge English vocab.      Кембриджский английский словарь.