| Acronym | Meaning |
| TPR | Tetratricopeptide Repeat |
| IST | Internal Standardization Technique |
| CIVB | Configuration Interaction Valence Bond |
| D/DBP | Disinfection And Disinfection Byproducts |
| USRA | Universities Space Research Association |
| APCD | Air Pollution Control Device |
| BAZ | Best Atom Zeta Basis Set |
| IRS | Inverse Raman Scattering |
| TACE | Tumor Necrosis Factor Alpha-converting Enzyme |
| CAI | Calcium Aluminum Inclusion |