| Acronym | Meaning |
| PIAS | Photon-counting Image Acquisition System |
| GDF | Generalized Density-functional (theory) |
| HDV | Hepatitis Delta Virus |
| FEBD | Fluid Extraction Biological Degradation Process For Organic Wastes |
| CICIS | Chemicals In Commerce Information System |
| EDXRS | Energy-dispersive X-ray Spectrometry |
| CDW | Continuum Distorted Wave |
| AES | Auger Emission Spectroscopy |
| HGNC | HUGO Gene Nomenclature Committee |
| OSTP | Office Of Science And Technology Policy |