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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

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   • S

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2. 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.

3. 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.

4. dictionary.cambridge.org › english › radiusRADIUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › radius

   • 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.

5. 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.

6. www.oxfordlearnersdictionaries.com › definitionradius noun - Definition, pictures, pronunciation and usage ...

   www.oxfordlearnersdictionaries.com › definition

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

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

   www.vocabulary.com › dictionary › radius

   Definitions of radius. noun. a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere) see more. noun. support consisting of a radial member of a wheel joining the hub to the rim. synonyms: spoke, wheel spoke. see more. noun.

8. dictionary.cambridge.org › learner-english › radiusRADIUS | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › learner-english › radius

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