| Acronym | Meaning |
| PIU | Power Interface Unit |
| DOA | DePartment Of Agriculture |
| E | LACS Extended Life Attitude Control System |
| SATS | Shuttle Avionics Test System |
| SSD | Spacecraft Software Division |
| LSPDF | Life Science Payloads Development Facility |
| M | Meter |
| GM | Gaseous Mixture |
| LSP | Least Significant Portion |
| FSSR | Functional Subsystem Software Requirements |