| Acronym | Meaning |
| PIHMC | Path Integral Hybrid Monte Carlo |
| IAP | Indoor Air Pollution |
| CSF | Configuration Spin Function (a Wave Function) |
| BGA | Bundesgesundheitamt (German Health Ministry) |
| WDI | World Drug Index |
| COSMIC | Computer Oriented Structure Models From Inadequate Derived Coupling Data |
| PDI | Polarization-division Interferometry |
| ATTIC | Alternative Treatment Technology Information Center (US EPA) |
| (SC)2(CI+PT2) | Self-consistent Size-consistent (CI+second-order Perturbation) |
| DCB | Distorted Coulomb-Born Approxn. |