| Acronym | Meaning |
| TDFGH | Time-dependent Fourier Grid Hamiltonian (method) |
| SPALEED | Spot Profile Analysis Low Energy Electron Diffraction |
| CFA | Component Failure Analysis |
| CCA | Copper Chromium Arsenic |
| NWIS | Nuclear Weapons Identification System |
| PTD | Probable Toxic Dose |
| QCPE | Quantum Chemistry Program Exchange |
| FWM | Four-wave Mixing |
| SICM | Scanning Ion-conductance Microscopy |
| NEDB | National Exposure Database (HSE) |