View your list of saved words. (You can log in using Facebook.)
Field of mathematics in which methods of calculus are applied to the local geometry of curves and surfaces (i.e., to a small portion of a surface or curve around a point). A simple example is finding the tangent line on a two-dimensional curve at a given point. Similar operations may be extended to calculate the curvature and length of a curve and to analogous properties of surfaces in any number of dimensions.
This entry comes from Encyclopædia Britannica Concise. For the full entry on differential geometry, visit Britannica.com.