| Acronym | Meaning |
| GRD | Growth Rate Dispersion [crystallization] |
| CEPP | Chemical Emergency Preparedness Plan |
| THGA | Transversely Heated Graphite Atomizer |
| SSC | Sudden Storm Commencement (magnetic Storm) |
| MFC | Multiconfigurational Frozen Core (approxn. For Electron-atom Scattering Calcns.) |
| WERL | Water Engineering Research Laboratory |
| LASTO | Linear Augmented Slater-type Orbital (for Electronic Structure) |
| PAW | Plasma Arc Welding |
| NTB | Nonorthogonal Tight-binding |
| CAUGA | Clifford Algebra Unitary Group Approach |