| Acronym | Meaning |
| PBA | Poly(butyl Acrylate) |
| SHG | Second Harmonic Generation |
| RMA | Rocky Mountain Arsenal (Colorado) |
| REPELS | Reemitted Positron Energy Loss Spectroscopy |
| QCP | Quantized Classical Path (method For Calcg. Quantum-mech. Rate Consts.) |
| MTPE | Mission To Planet Earth |
| PAHO | Pan American Health Organization |
| ESPRIT | European Strategic Programme For Research And Development In Information Technology |
| CASS | Cyclic Activated Sludge System |
| CORMA | COmplete Relaxation Matrix Analysis |