Synonyms for

Radius

Verb / ˈreɪdi:ʌs / Another word for radius — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

The distance from the center to the edge of a circle or sphere.

Synonyms & similar words

spoke wheelspoke r diameter extent reach span scope perimeter circumference limit boundary margin edge periphery outline border fringe hem brim rim lip skirt

Synonyms by register

Formal

radial distance half-diameter

Antonyms

diameter circumference tangent chord secant arc

Common collocations

  • radius of gyration
  • radius of curvature
  • radius vector
  • radius of convergence
  • inner radius
  • outer radius
  • atomic radius
  • ionic radius

Word family

noun radius
adjective radial

Usage note

Radius is primarily a geometric term referring to the distance from the center of a circle or sphere to its edge. It is also used in scientific contexts, such as atomic or ionic radius.

Example sentences

  1. The radius of the Earth is about 3,959 miles.
  2. The radius of the circle is half the diameter.
  3. The radius of the sphere is the distance from the center to any point on the surface.
  4. The radius of the tires on the car need to be checked.
  5. The radius of the explosion was felt for miles.

Quotes

  • Life is a circle. The end of one journey is the beginning of the next. You must always start anew with hope and radiance.
  • Happiness is a warm puppy.
  • The true radiance of the soul shines only when it is polished and cleansed from worldly pollution.

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