| Acronym | Meaning |
| FIRMR | Federal Information Resources Management Regulations |
| APS | Atom Probe Spectroscopy |
| TDS | Total Dissolved Solids |
| OTLC | Open Tubular Liquid Chromatography |
| ECRIS | Electron Cyclotron Resonance Ion Source |
| ASP | Antisegregation Process |
| URA | Universities Research Association |
| MOU | Memorandum Of Understanding |
| MAESA | Measurements For Assessing The Effects Of Stratospheric Aircraft |
| NOGF | Nonorthogonal Group Function Approximation |