[n] a diagrammatic representation of the earth's surface (or part of it)
[n] a function such that for every element of one set there is a unique element of another set
[v] to establish a mapping (of mathematical elements or sets)
[v] explore or survey for the purpose of making a map; "We haven't even begun to map the many galaxies that we know exist"
[v] plan, delineate, or arrange in detail; "map one's future"
[v] make a map of; show or establish the features of details of; "map the surface of Venus"
[v] depict as if on a map; "sorrow was mapped on the mother's face"
[v] locate within a specific region of a chromosome in relation to known DNA or gene sequences; "map the genes"