| Acronym | Meaning |
| 4DDD | Four-Dimensional Data Assimilation |
| AGS | Alternating-gradient Synchrotron |
| DOELAP | DOE Laboratory Accreditation Program |
| GBYTE | Gigabyte (109) |
| METEOSAT | Meteorological Satellite |
| GAO | General Accounting Office |
| AMS | Army Map Service |
| GEF | Global Environmental Facility |
| FREON | DuPont Trade Name |
| GCTE | Global Change And Terrestrial Ecosystems |