| Acronym | Meaning |
| SLF | Slater-Laguerre (hydrogenic-type Wave) Function |
| PPN | Peroxypropionyl Nitrate |
| RVB | Resonating Valence Bond (theory Of High-tc Superconductors) |
| CFM | Continued-fraction Method |
| SLT | Standard Leaching Test |
| BEI | Biological Exposure Indices |
| PCGC | Parallel Column Gas Chromatography |
| CERCLA | Comprehensive Environmental Response |
| ETD | Enhanced Trickle Down (watershed Acidification Model) |
| COMFA | Comparative Molecular Field Analysis |