| Acronym | Meaning |
| PCAD | Power Conditioning And Distribution (in Spacecraft) |
| SCN | Suprachiasmatic Nucleus |
| GCMS | Gas Chromatography Mass Spectrometry |
| APCS | Argonne Premium Coal Sample |
| NAMS | National Air Monitoring Station |
| CCRMP | Canadian Certified Ref. Materials Project |
| LSE | Liquid/solid Extraction |
| VSD | Virtually Safe Dose |
| SSSP | Simulation Of Single Sludge Processes |
| AWI | Air Water Interface |