| Acronym | Meaning |
| BSSEC | Basis-set Superposition Error Correction |
| PWBE | Plane-wave Born Approxn. With Exchange |
| QTOF | Quadrupole Time-of-flight |
| SUV | Standardized Uptake Value |
| CRINEPT | Cross-correlated Relaxation-enhanced Polarization Transfer |
| RAMS | Regional Air Monitoring System |
| SURE | Sulfate Regional Experiment |
| OCT | Optimized Cluster Theory |
| RBCA | Risk-based Corrective Action |
| TSNA | Tobacco-specific Nitrosamines |