| Acronym | Meaning |
| CIDNP | Chemically Induced Dynamic Nuclear Polarization |
| POGO | Polar Orbiting Geophysical Observatory |
| DIM | Dissolved Inorganic Matter |
| FPGS | Folylpolyglutamate Synthetasepar |
| IMPROVE | Interagency Monitoring For Protected Visual Environments |
| DRS | Direct Recoil Spectroscopy |
| MSWLF | Municipal Solid Waste Landfill |
| PIMD | Path Integral Molecular Dynamics |
| ALOTS | Airborne Lightweight Optical Tracking System |
| NPA | Natural Population Analysis (for Electron Configuration Of Mols.) |