Topology /(?)/

To·pol·o·gy

Topology

n.
  1. The art of, or method for, assisting the memory by associating the thing or subject to be remembered with some place. [R.]
  2. a branch of mathematics which studies the properties of geometrical forms which retain their identity under certain transformations, such as stretching or twisting, which are homeomorphic. See also topologist.
  3. configuration, especially in three dimensions; -- used, e. g. of the configurations taken by macromolecules, such as superhelical DNA.