| Acronym | Meaning |
| IDA | Isotope Dilution Analysis |
| VLBI | Very Long Baseline Interferometry |
| RID | Recrystn. Induced Diffusion |
| PMAD | Power Management And Distribution (system) (of Space Station) |
| PDGFR | Platelet-derived Growth Factor Receptor |
| GWM | Groundwater Monitoring |
| JAERI | Japanese Atomic Energy Research Institute |
| EPR | Electrochemical Potentiokinetic Reactivation |
| AQL | Acceptable Quality Levels |
| BNN | Back-propagation Neural Network |