| Acronym | Meaning |
| BIXS | Beta-ray Induced X-ray Spectrometry |
| PEN | Personal Electronic Notebook |
| NICE | Neutral Interstellar Composition Experiment |
| ATCM | Air Toxics Control Measure |
| LKKR | Layer Korringa-Kohn-Rostoker (in Interface Electronic Structures) |
| EDA | European Desalination Association |
| LDPE | Low Density Polyethylene |
| AGE | Advanced Glycosylation End Product |
| TOM | Transition Operator Method |
| NTB | Nonorthogonal Tight-binding |