| Acronym | Meaning |
| CBO | Coulomb Born Oppenheimer |
| IGC | International Geological Congress |
| CC | Close Coupling Method (for Atom-molecule Collisions) |
| PSNS | Pretreatment Standards For New Sources |
| CIAP | Climatic Implications Of Atmospheric Pollution |
| NSH | Normalized Spherical Harmonic (hamiltonian) |
| WELAC | Western European Laboratory Accreditation Cooperation |
| ESD | Environmental Services Division (US EPA) |
| NPO | National Program Office |
| SLAP | Standard Light Antarctic Precipitation |