| Acronym | Meaning |
| O/E | Observed Number/expected Number Ratio = Relative Risk |
| MC-SCF | Monte Carlo Self-consistent-field |
| PITT | Partitioning Interwell Tracer Test |
| DZ | Dunning-Huzinaga (basis Sets) |
| PDI | Point Dipole Interaction (model For Mol.-polarizability Calcns.) |
| AEA-MO | All-electron Approxn.-mol. Orbital |
| STP | Sewage Treatment Plant |
| SIMM | Single Inline Memory Module |
| MCMC | Markov Chain Monte Carlo |
| EEL | Environmental Exposure Levels |