| Abbreviation | Meaning |
|---|---|
| 2.5D | Two-and-a-half-dimensional |
| 2D | Two-dimensional |
| 3D | Three-dimensional |
| A0 | A0 is a paper size that is typically used for technical drawings and posters. A0 measures 841 × 1189 millimeters or 33.11 × 46.81 inches. |
| A4 | The standard size of typing paper adopted by the International Standards Organization. It measures 210 mm wide and 297 mm long. |
| API | Application programming interface |
| ArcGIS | a desktop Geographic Information System produced by Esri |
| AVHHR | Advanced very high resolution radiometer |
| CCD (array) | Charge-coupled device |
| CEP | Circular error probable |
| CMAS | Circular map accuracy standard |
| CSW | Catalogue Service for the Web |
| DBMS | Database Management System |
| DEM | Digital elevation model |
| Dpi | Dots per inch |
| DVD | Digital optical disc storage format |
| ESRI | International supplier of geographic information system software, web GIS and geodatabase management applications |
| GIS | Geographic information system |
| GML | Geography Markup Language |
| GPS | Global positioning system |
| IBM DB2 | Relational Database Management System (RDBMS) from IBM company |
| IDB | International Data Base |
| IP | Internet Protocol |
| ISO | International Organization for Standardization |
| ITC | International Training Centre |