What curvature is to lines, gradation is to shades and colors.
I might just as well have suspected the girl of a curvature of the spine.
Slight inequality of curvature in meridians of right cornea.
The place had a curvature like that of the seats in a theatre.
Curvature of the spine is more common than is usually thought.
On the other hand, the curvature of the seas ...