Maps that display the geographic distribution of a phenomenon or the spatial relations that occur between multiple phenomena.
A map which communicates a single theme or subject. For example, a population density map and political boundary map are both thematic maps.
Definition adapted from: Krygier, John and Denis Wood. 2005. Making maps: a visual guide to map design for GIS, accessed through http://makingmaps.owu.edu
Definition adapted from: URL: http://www.digimap.gg/glossary
For more, visit the Wikipedia entry for thematic map, URL: http://en.wikipedia.org/wiki/Thematic_map