| Acronym | Meaning |
| AFGL | Air Force Geophysics Laboratory |
| EXELFS | Extended Energy-loss Fine Structure |
| SOA | Secondary Organic Aerosols |
| PBX | Plastic Bonded Explosive |
| C4 | Controlled Collapse Chip Connection |
| MVEG | Motor Vehicle Emissions Group |
| TERT | Telomerase Reverse Transcriptase |
| GHRF | Growth Hormone-releasing Factor |
| DZ | Dunning-Huzinaga (basis Sets) |
| BDT | Brittle-ductile Transition |