RADIUS Definition Meaning - Merriam-Webster The meaning of RADIUS is a line segment extending from the center of a circle or sphere to the circumference or bounding surface How to use radius in a sentence
Radius of a circle definition and calculator - Math Open Reference The plural form is radii (pronounced "ray-dee-eye") In the figure above, drag the orange dot around and see that the radius is always constant at any point on the circle Sometimes the word 'radius' is used to refer to the line itself In that sense you may see "draw a radius of the circle"
RADIUS在剑桥英语词典中的解释及翻译 - Cambridge Dictionary radius noun [C] (DISTANCE) Add to word list (the length of) a straight line joining the centre of a circle to its edge or the centre of a sphere to its surface: