| Acronym | Meaning |
| DSH | Dye-sensitized Heterojunction |
| RC(XI) | (fully) Correlated Relativistic Local-density |
| LRAD | Long-range Alpha Detection |
| BNCT | Boron Neutron Capture Therapy |
| CTB | Computer Technology Branch |
| DBMS | Data Base Management System |
| TRC | Total Residual Chlorine |
| CIDA | Cometary Impact Dust Analyzer |
| EK | Extended Koopmans (method In Ionization Potential Calcns.) |
| UHFQ | Unrestricted Hartree-Fock With Quartet Annihilation |