| Acronym | Meaning |
| HSF | Hiller-Sucher-Feinberg (equation For Calcn. Of Spin Densities And Charge Densities In Mols.) |
| MSA | Microscopy Society Of America |
| SLAPW | Surface Linearized Augmented Plane Wave |
| PVDF | Polyvinylidene Difluoride |
| SIAM | Society For Industrial And Applied Mathematics |
| CT | Disinfectant Concn. Times The Contact Time |
| TRIPS | Trade-Related Aspects Of Intellectual Property Rights |
| ASCT | Autologous Stem Cell Transplantation |
| OESO | Ordnance Environmental Support Office (Navy) |
| ITER | International Toxicity Estimates For Risk |