| Acronym | Meaning |
| CAA | Clean Air Act Of 1970 |
| BKCM | Burkhardt-Konya-Coulson-March (for Electron Momentum Densities) |
| EAA | Excitatory Amino Acid |
| BBFM | Bond-bending Force Model (for Phonon Calcns.) |
| IJC | International Joint Commission |
| PMSR | Pairwise-mixing Stirred Reactor |
| EPAAR | EPA Acquisition Regulation Manual |
| UKB | Unrestricted Kinetic Balance (in Calcns. Of Wave Functions And Energies) |
| PAPVD | Plasma-assisted Physical Vapor Deposition |
| FDR | Frequency Domain Reflectometry |