There are many online glossaries of GIS terms and acronyms. We recommend you compare the definitions from three sources to get a comprehensive idea of what the term means.
- GIS Wiki: wiki.gis.com
- Dictionary of Abbreviations and Acronyms in GIS, Cartography, and Remote Sensing—University of California at Berkeley
- ESRI Online GIS Dictionary
- FGDC Glossary—most terms are from the Spatial Data Transfer Standard (FIPS 173)
- Geographer's Craft Glossary—University of Colorado at Boulder
- GIS Data Depot Helpdesk Glossary
- Glossaire SIG—French-language glossary from ESRI-France
- Glossary of Cartographic Terms—Perry-Castañeda Library, University of Texas at Austin
This map from the Center for the Evaluative Clinical Sciences at Dartmouth Medical School shows the number of children under 18 per clinically active pediatrician.