| Acronym | Meaning |
| REOM | Reduced Equations Of Motion (method In Mol.-scattering Calcns.) |
| NLM | National Library Of Medicine |
| SLAPW | Surface Linearized Augmented Plane Wave |
| NCAR | National Center For Atmospheric Research (USA) |
| APA | Alkaline Phosphatase Activity |
| HMTA | Hazardous Material Transportation Act |
| HFPD | Hartree-Fock With Proper Dissociation (wave Function) |
| NPDOC | Non-purgeable Dissolved Organic Carbon |
| CCPP | Combined Cycle Power Plant |
| MB-SAPT | Many Body-symmetry Adapted Perturbation Theory |