| Acronym | Meaning |
| CREB | CAMP-responsive Element-binding |
| UDF | Unrestricted Dirac-Fock |
| EHF | Extended Hartree-Fock |
| CN | Condensation Nucleus |
| SPEG | Solid Phase Epitaxial Growth |
| ANWAP | Arctic Nuclear Waste Assessment Program |
| DMICS | Design Methods For Integrated Control Systems [propulsion] |
| WSHS | Watershed Hydrologic System |
| PC | Personal Computer |
| CLM | Contained Liquid Membrane |