| Acronym | Meaning |
| ESSL | Earth & Sun Systems Laboratory (formerly ATD) |
| OLE | Object Linking And Embedding |
| BSD | Berkeley Software Distribution |
| IPU | Instrument Processor Unit |
| ACGIH | American Conference Of Governmental Industrial Hygienists |
| IMSP | International Meteorological Service Program |
| RDP | Research Data Program |
| UARC | Upper Atmosphere Research Corporation |
| MCC | Mission Control Center |
| GAL | Galileo |