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radius Synonyms

Another word for radius

Choosing another word for radius depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

A straight line extending from the center of a circle or sphere to its circumference or surface, or the length of such a line.

Usage Example

"To calculate the area of the circle, multiply pi by the square of the semidiameter."

Strongest
semidiameter

• noun (Context 2)

A circular area of a specified distance surrounding a central point, or the range of an activity or influence.

Usage Example

"The delivery service operates free of charge within a five-mile range of the store."

Strong
range
reach
scope
sweep
Weak
compass
ambit

• Nearby Words

radiometer
radiotherapy
radiothon
radius
raffish
raffle
raft

Cite this Entry

Wordmom. (2026). Synonyms for Radius. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/radius
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