| Acronym | Meaning |
| TACB | Texas Air Control Board |
| RCC | Relativistic Coupled Cluster |
| UCP | Uncoupling Protein |
| PPLN | Periodically Poled Lithium Niobate |
| SXRD | Surface X-ray Diffraction |
| ATERIS | Air Toxics Exposure And Risk Information System |
| CRINEPT | Cross-correlated Relaxation-enhanced Polarization Transfer |
| PSEP | Polyhedral Skeletal Electron Pair (for Metal Clusters) |
| IUPPA | The International Union Of Air Pollution Prevention Associations |
| BIR | Baculovirus IAP Repeat |