| Acronym | Meaning |
| MEXA | Multiple-energy X-ray Absorptiometry |
| ABA | Acrylonitrile-butadiene Acrylate |
| AHF | Approximate Hartree-Fock Method |
| NASQAN | National Stream Quality Accounting Network |
| PIAC | Polymer Industrial Advisory Council |
| IEL | Independent Electron (model In Ion-impact Ionization Calcns.) |
| SCMP | Self-consistent Madelung Potential |
| FO-NACME | First-order Nonadiabatic Coupling Matrix Elements |
| MRL | Maximum Residue Limit |
| TWTDS | Treatment Works Treating Domestic Sewage |