| Acronym | Meaning |
| MDH | Malate Dehydrogenase |
| MEDOC | Multipole Expansion Defined (on) One Center (a Wave Function In Calcns. On Atomic And Molecular Collisions) |
| FEPCA | Federal Environmental Pesticide Control Act |
| IIRSM | International Institute Of Risk And Safety Management |
| PWS | Public Water System |
| SSIP | Solvent-separated Ion Pair |
| SST | Sea Surface Temperature |
| TSSMS | Time Sharing Service Management System |
| LEED | Low-energy Electron Diffraction |
| FFM | Finite Field Method (in Mol. Polarizabilities Calcns.) |