| Acronym | Meaning |
| UMF | User Master File |
| LCD | Liquid Crystal Display |
| ORU | Orbital Replacement Unit |
| ESHP | Effective Shaft Horse Power |
| CALCRUST | Consortium For Study Of The California Crust |
| ANPR | Advance Notice Of Proposed Rulemaking |
| GEO 2000 | National Science Foundation's Geosciences Beyond 2000 |
| AAP | Aviation Applications Program |
| DGPS | Differential Global Positioning System |
| NDVI | Normalized Difference Vegetation Index |