| Acronym | Meaning |
| DBPR | Microbiological And Disinfection Byproducts Regulations |
| EPA | Environment Potential Approach (in Electronic-structure Calcn.) |
| UCA | Unit Cell Approximation [simulation Method] |
| AFC | Antibody Forming Cell |
| XGRS | X-ray/gamma-ray Spectrometer |
| REV | Ray Eigenvector (a Wave Function) |
| NHE | Normal Hydrogen Electrode |
| RLM | Rotating Linear Model (for Effective Potential Surfaces In Coupled-channel Calcns. On Reactive Scattering) |
| CLS | Cathodoluminescence Spectroscopy |
| IMPPT | Interaction Moeller-Plesset Perturbation Theory |