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 …

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 is defined as a line segment that connects the center of a circle or a sphere to its circumference or boundary. It is an important part of circles and spheres and is generally …

The radius of the circle is the distance between the center of the circle and any point on its circumference. Learn the definition, formulas, examples, and more.

The supermarket, shopping mall, and school are all within a one-mile radius of the house (= are all less than a mile away from it).

The radius (plural radii) of a circle is any line segment that has one endpoint on the center of the circle and the other endpoint on the circle's circumference.

Definition of radius noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

RADIUS definition: a straight line extending from the center of a circle or sphere to the circumference or surface. See examples of radius used in a sentence.

RADIUS is an AAA (authentication, authorization, and accounting) protocol that manages network access. RADIUS uses two types of packets to manage the full AAA process: Access-Request, …

Oct 7, 2025 · The radius of a circle is the distance from the center of the circle to any point on its circumference. The easiest way to find the radius is by dividing the diameter in half.