| Acronym | Meaning |
| RNAI | RNA Interference |
| TFW | Thomas-Fermi-Weizsaecker (electron-d. Theory) |
| LIPAS | Laser Induced Photoacoustic Spectroscopy |
| SA-MCSCF | State Averaged Multiconfiguration Self-consistent Field (wave Function) (see Also ICF-CI) |
| EFOIA | Electronic Freedom Of Information Act |
| UAPSP | Utility Acid Precipitation Study Program |
| AB | Arc Brazing |
| APRF | Army Pulse Radiation Facility |
| CSEPP | Chemical Stockpile Emergency Preparedness Plan |
| TALMS | Tunable Atomic Line Molecular Spectroscopy |