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radius

/ˈreɪdiəs/ noun · British & US
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What does radius mean?

noun

The distance from the center of a circle or sphere to the edge. A straight line extending from the center of a circle or sphere to the circumference.

Example

"The radius of the Earth is approximately 6,371 kilometers."

Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.

Etymologically related

Synonyms for radius

Rhymes with radius