| Acronym | Meaning |
| HIT | Heparin-induced Thrombocytopenia |
| DPIA | Digital Printing And Imaging Association |
| IPS | Inclined Plate Settler (for Wastewater Treatment) |
| AAAI | American Association For Artificial Intelligence |
| LWR | Light-water Reactor |
| LSDXS-SIC | Local-spin-density (with) Screened Exchange (and) Self-interactiond Correction |
| BBSRC | Biotechnology And Biological Sciences Research Council |
| ASNT | American Society For Nondestructive Testing |
| PWBA-C | Coulomb Corrected Plane Wave Born Approxn. |
| NCID | National Center For Infectious Diseases |