| Acronym | Meaning |
| NES | National Energy Strategy |
| PRTD | Proportional Residence Time Distribution (of Liquid Streams In Equalization Basins In WWT) |
| MSSM | Minimal Supersymmetric Standard Model |
| ASBMB | American Society For Biochemistry And Molecular Biology |
| CSI | Chemical Substances Inventory |
| GLAST | Gamma-ray Large Area Space Telescope |
| HRPA | Higher Random Phase Approximation |
| AIDS | Acquired Immune Deficiency Syndrome |
| MFRC | Membrane Flux Retention Coefficient |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |