| Acronym | Meaning |
| MNP | Microcom Network Protocol |
| IFR | Instrument Flight Rules |
| OSO | Office Of Systems Operations |
| M3 | M Cubed |
| DOA | Department Of Agriculture |
| MSI | Measurements |
| OSCAR | Oxidant-Scavenging Characteristics Of April Rains |
| TLS | Tunable Laser Spectroscopy |
| STSP | Solar Terrestrial Science Programme |
| SEE | Solar EUV Experiment |