| Acronym | Meaning |
| IRF | Instrument Response Function |
| IBAE | Ion Beam Assisted Etching |
| BDNF | Brain-derived Neurotrophic Factor |
| CDMA | Code Division Multiple Access |
| TARC | Tiered Area Response Capability |
| SCE | Semiclassical Exchange Approximation |
| AIM | Atoms In Molecules Method |
| RIA | Regulatory Impact Analysis |
| SXES | Soft X-ray Emission Spectroscopy |
| MSD | Mass Selective Detector |