| Acronym | Meaning |
| MCRRPA | Multiconfiguration Relativistic Random Phase Approxn. |
| BOSEX | Baltic Open Sea Experiment |
| UTP | Unitary Transformation (based) Perturbation (theory) |
| XPD | X-ray Photoelectron Diffraction |
| LOIS | Land-Ocean Interaction Study |
| SNMS | Secondary Neutral Mass Spectrometry |
| SDWA | Safe Drinking Water Act |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |
| SOC | Superposition Of Configurations (wave Functions) |
| NDCEE | National Defense Center For Environmental Excellence |