| Acronym | Meaning |
| BIS | Bremsstrahlung Isochromat Spectroscopy |
| AFRL | Air Force Research Laboratory |
| DGNAA | Delayed Gamma-ray Neutron Activation Analysis |
| VPC | Vapor-phase Chromatography |
| PO | Projection Operator |
| TMFA | Three-mode Factor Analysis |
| MPLC | Medium Pressure Liquid Chromatography |
| INTEGRAL | International Gamma-Ray Astrophysics Laboratory |
| AAFEGE | Asymptotically Adjusted Free-electron-gas Exchange (potential) |
| MCE | Microchannel Epitaxy |