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1. Dictionary

   ra·di·us

   /ˈrādēəs/

   noun

   • 1. a straight line from the center to the circumference of a circle or sphere.
   • ▪ a radial line from the focus to any point of a curve.
   • ▪ the length of the radius of a circle or sphere.
   • ▪ a specified distance from a center in all directions: "there are plenty of local pubs within a two-mile radius"
   • 2. the thicker and shorter of the two bones in the human forearm.
   • ▪ the corresponding bone in a vertebrate's foreleg or a bird's wing.
   • ▪ any of the main veins in an insect's wing.
   • 3. (in an echinoderm or coelenterate) any of the primary axes of radial symmetry.

   verb

   • 1. give a rounded form to (a corner or edge): "Brian carefully radiused all the sharp edges and corners"

   Word Origin late 16th century (in radius (sense 2 of the noun)): from Latin, literally ‘staff, spoke, ray’.

   Scrabble Points: 7

   • R

     1

   • A

     1

   • D

     2

   • I

     1

   • U

     1

   • S

     1

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   More definitions, origin and scrabble points

2. dictionary.cambridge.org › dictionary › englishRADIUS | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

   • Cached

   RADIUS definition: 1. (the length of) a straight line joining the centre of a circle to its edge or the centre of a…. Learn more.

3. www.merriam-webster.com › dictionary › radiusRadius Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › radius

   • Cached

   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.

4. www.dictionary.com › browse › radiusRADIUS Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › radius

   • Cached

   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.

5. dictionary.cambridge.org › us › dictionaryRADIUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

   • Cached

   RADIUS meaning: 1. (the length of) a straight line joining the centre of a circle to its edge or the centre of a…. Learn more.

6. www.collinsdictionary.com › dictionary › englishRADIUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

   • Cached

   11 meanings: 1. a straight line joining the centre of a circle or sphere to any point on the circumference or surface 2. the.... Click for more definitions.

7. www.vocabulary.com › dictionary › radiusRadius - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › radius

   The radius of a circle is the distance from its center to the circumference, and if you are working on your geometry homework, or designing anything circular, you'll be writing down a little "r" quite frequently, to stand for "radius."

8. www.thefreedictionary.com › radiusRadius - definition of radius by The Free Dictionary

   www.thefreedictionary.com › radius

   • Cached

   1. a straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is half the diameter. 2. the length of such a line.

9. dictionary.cambridge.org › dictionary › learner-englishRADIUS | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › dictionary › learner-english

   • Cached

   RADIUS definition: 1. a certain distance from a particular point in any direction: 2. the distance from the centre of…. Learn more.

10. www.ldoceonline.com › dictionary › radiusradius | meaning of radius in Longman Dictionary of Contemporary...

    www.ldoceonline.com › dictionary › radius

    • Cached

    radius meaning, definition, what is radius: the distance from the centre to the edge...: Learn more.

11. www.britannica.com › dictionary › radiusRadius Definition & Meaning | Britannica Dictionary

    www.britannica.com › dictionary › radius

    • Cached

    RADIUS meaning: 1 : a straight line from the center of a circle or sphere to any point on the outer edge; 2 : the length of this line.