| Acronym | Meaning |
| SO SCF | Spin-optimized Self-consistent Field |
| ECHO | European Community Host Organization |
| PNN | Lead Nickel Niobate |
| GNVP | Generalized Newton Variational Principle |
| BLTM | Branched Lagrangian Transport [model] |
| MBESMO | Maximum Bond Energy Symmetry MO |
| ZECSY | Zero-quantum Coherence Correlation Spectroscopy |
| SAM | Scanning Auger Microscopy |
| MRLV | Mobile Raman Lidar Van |
| ASMD | Atmospheric Sciences Modeling Division (US EPA) |