| Acronym | Meaning |
| CBR | Cosmic Background Radiation |
| MTC | Man Tended Capability |
| LEDA | On-line Earthnet Data Access |
| TIG | Time Of (until) Ignition |
| IOTA | Infrared-Optical Telescope Array |
| EUMETSAT | European Meterological Satellite Organisation |
| CFF | Columbus Free Flyer |
| OMB | Office Of Management And Budget |
| BC | Bolometric Correction |
| NOCC | Network Operations Control Center |