| Acronym | Meaning |
| ACD | Atmospheric Chemistry Division |
| HFA | Humic And Fulvic Acids |
| BMS | Buried Metallic Sulfide |
| FMA | Failure-mode Analysis |
| SSED | Solar System Exploration Division (NASA) |
| NLS | Nuclear Localization Signal |
| QC-SCF | Quadratically Convergent SCF (for Closed-shell Systems) |
| TIMI | Thrombolysis In Myocardial Infarction |
| RAG | Risk Assessment Guideline |
| BLIP | Background-limited Infrared Photodetector |