| Acronym | Meaning |
| EOSDIS | Earth Observing System Data And Information System |
| FR | Federal Register |
| ESIS | ESA Space Information Systems |
| ORU | Orbital Replacement Unit |
| ADR | Audit Discrepancy Report |
| EAR | Export Administration Regulations |
| AARADCOM | US Army Armanents R&D Command |
| CAE | Cooler |
| ULTRIX | UNIX-based Operating System For Digital Equipment Corporation Computers |
| TAGS | Text And Animation Graphics Server |