| Acronym | Meaning |
| GDC | Glow Discharge Cleaning |
| EFH | Extended Fenske-Hall (LCAO MO Method) |
| ELI | Extra Low Interstitial |
| HGG | Hot Gas Generator |
| SFEM | Scanning Field Emission Microscopy |
| LMSA | Linear Multivariate Statistical Analysis |
| LDEF | Long Duration Exposure Facility (for Spacecraft Material Testing) |
| SMO | Sample Management Office (US EPA) |
| DAF | Decay-accelerating Factor |
| DF-OCE | Dirac-Fock One-center Expansion |