| Acronym | Meaning |
| AAV | Adeno-associated Virus |
| HPM | Hypervirial-perturbative Method |
| UKAS | United Kingdom Accreditation Service |
| UDI | Utility Data Institute (power Generation) |
| HMDE | Hanging Mercury Drop Electrode (in Electrochemistry) |
| RQTOX | Reportable Quantities For Chronically Toxic Hazardous Substances |
| PREM | Preliminary Ref. Earth Model |
| ERP | Enterprise Resource Planning |
| ATDHF | Adiabatic Time-dependent Hartree-Fock |
| MBE | Many-body Expansion (in Mol. Potential Energy Surface Calcn.) |