combinatorial geometry

Etymology
From circa 1955.

Noun

 * 1)  The field of mathematics which examines extremal problems of a combinatorial nature expressed geometrically.
 * 2) * 2012, Mohammed Mostefa Mesmmoudi, et al., Discrete Curvature Estimation Methods for Triangulated Surfaces, Ullrich Köthe, Annick Montanvert, Pierre Soille (editors), Applications of Discrete Geometry and Mathematical Morphology, Springer, 7346, page 28,
 * In combinatorial geometry, the most common discrete representation for a surface is a triangle mesh.
 * 1)  A simple matroid.
 * In combinatorial geometry, the most common discrete representation for a surface is a triangle mesh.
 * 1)  A simple matroid.

Usage notes

 * The "simple matroid" sense may appear in texts dealing with the "field of mathematics" sense.