The elegant curvature of their fronds. --Darwin.
2. (Math.) The amount of degree of bending of a mathematical
curve, or the tendency at any point to depart from a
tangent drawn to the curve at that point.
{Aberrancy of curvature} (Geom.), the deviation of a curve
from a circular form.
{Absolute curvature}. See under {Absolute}.
{Angle of curvature} (Geom.), one that expresses the amount
of curvature of a curve.
{Chord of curvature}. See under {Chord}.
{Circle of curvature}. See {Osculating circle of a curve},
under {Circle}.
{Curvature of the spine} (Med.), an abnormal curving of the
spine, especially in a lateral direction.
{Radius of curvature}, the radius of the circle of curvature,
or osculatory circle, at any point of a curve.