| Acronym | Meaning |
| MSA | Mineralogical Society Of America |
| CDK | Cyclin Dependent Kinase |
| ZQC | Zero-quantum Coherence |
| ICCVAM | US Interagency Coordination Committee On The Validation Of Alternative Methods |
| ERP | Enterprise Resource Planning |
| PRMO | Partially Restricted Molecular Orbital |
| ASD | Active Subslab Soil Depressurization (for Radon Minimization In Buildings) |
| MCD | Magnetic Circular Dichroism |
| IEL | Independent Electron (model In Ion-impact Ionization Calcns.) |
| OAR | Office Of Air And Radiation (USEPA) |