| Acronym | Meaning |
| TWTA | Traveling Wave Tube Amplifier |
| AOC | Administrative Order Of Consent |
| SODAR | Sound Detection And Ranging (meteorological Instrument) |
| EAM | Embedded Atom Method |
| TLHJ | Triple-layer Heterojunction |
| PIES | Penning Ionization Electron Spectroscopy |
| EVB | Empirical Valence Bond |
| FIMDA | Fluorescence Intensity Multiple Distributions Analysis |
| UHFS | Unrestricted Hartree-Fock-slater |
| CAE | Capillary Affinity Electrophoresis |