Diameter and Radius

Related words

Diameter noun - The length of a straight line passing through the center of a circle and connecting two points on the circumference.

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Radius and diameter are semantically related. In some cases you can use "Radius" instead a noun "Diameter".

Nearby Words: diametric, diametral

Radius noun - A straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere).

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Diameter and radius are semantically related. You can use "Diameter" instead a noun "Radius".

Nearby Words: radiation, radial

Thus, a black hole with a mass equal to the sun has an event horizon 3 kilometers in radius (6 km in diameter).

Source: Useful Notes / Black Holes
And that's radius, not diameter - meaning that as soon as it fires it's goodbye Gem.

Source: Wave Motion Gun
The Warlord Titan has one of the biggest ones in the game; ignoring all of it's weapons, just by dying it will hit everything within a 36 inch radius (NOT diameter) with an attack powerful enough to atomize them.

Source: Instant Death Radius

Cite this Source

Radius and Diameter. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/diameter/radius

Diameter & Radius. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/diameter/radius>.

Radius or Diameter. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/diameter/radius.

Google Ngram Viewer shows how "diameter" and "radius" have occurred on timeline