| Acronym | Meaning |
| LST | Large Space Telescope |
| PMR | Pressure Modulator Radiometer |
| OM | Office Of Meteorology |
| SERP | Strategic Environmental Research Program |
| BDSP | Basic Data Set Project |
| API | Axial Power Indicator |
| PDL | Program Design Language |
| ADI | Alternating Direction Implicit |
| EUMETSAT | European Meteorological Satellite |
| ADM | Action Description Memorandum |