You know what it looks like… but what is it called?
TAKE THE QUIZ“radius of”
The following 3 entries include the term radius of.
radius of curvature
noun phrase: the reciprocal of the curvature of a curve
radius of gyration
: the radius of a cylindrical surface coaxial with the axis of rotation of a body such that if the entire mass of the body were concentrated in that surface the moment of inertia and energy of rotation would be unchanged
radius of torsion
: the reciprocal of the torsion of a space curve
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Merriam-Webster unabridged
