| Acronym | Meaning |
| REG | Register |
| FPC | Forward Power Controller |
| GPH | Gallons Per Hour |
| FIE | Flight Instrumentation Engineer |
| CST | Contract Supplemental Tooling |
| OMB | Office Of Management And Budget |
| PSM | Pyro Substitute Monitor |
| M | ECCA Master Electrical Common Connector Assembly |
| MFMR | Multifrequency Microwave Radiometer |
| OTP | OPerational Test Procedure |