| Acronym | Meaning |
| TWTA | Traveling Wave Tube Amplifier |
| DRF | Dose Reduction Factor |
| CAG | Continental-arc Granitoids |
| CAIS | Calcium-aluminum-rich Inclusions |
| PMN | Lead Magnesium Niobate |
| DOIT | Federal Advisory Committee To Develop On-site Innovative Technologies |
| ESP | Electrostatic Precipitator |
| SRF | Serum Response Factor |
| SPDT | Single-pole Double-throw (switch) |
| LAPW | Linearized Augmented Plane Wave (for Band-structure Calcns.) |