| Acronym | Meaning |
| AMPTE | Active Magnetosphere Particle Tracer Explorers |
| PSL | Polystyrene Latex |
| APO | Aq.-phase Oxidn. |
| ILS | Ionization Loss Spectroscopy |
| HMSA | Hybrid Mean Spherical Approximation |
| FIRMR | Federal Information Resources Management Regulations |
| PCF | Photonic Crystal Fiber |
| HTP | Helical Twisting Power |
| PLD | Programmable Logic Device |
| RUS | Resonant Ultrasound Spectroscopy |