radii

noun

support consisting of a radial member of a wheel joining the hub to the rim

the outer and slightly shorter of the two bones of the human forearm

a circular region whose area is indicated by the length of its radius

a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)

the length of a line segment between the center and circumference of a circle or sphere

Roots

radiusradi- · Latin · ray, spoke

Synonyms & related words for radii

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Words related to radii

Explore words related to radii — words associated with it, words that go with it, and its nearest matches in meaning. Related words include radius, interradius, interradial, semidiameter, perradial, diameters, radial, ellipticity. Click any word to make it the center of the map and keep exploring the web of connections.

Where does radii come from?

The word radii breaks down into one root of Latin origin: the root radi-, from Latin radius (“ray, spoke”). Explore each root to see other English words built from the same source.