| Acronym | Meaning |
| AQDHS | Air Quality Data Handling System |
| HIWIP | Homojunction Interfacial Work-function Internal Photoemission |
| DON | Dissolved Organic Nitrogen |
| IP | Inhalable Particle |
| DHCP | Double Hexagonal Close Packedpar |
| RECA | Regional Energy Convergence Approxn. (in Total Energies Calcns.) |
| RUSLE | Revised Universal Soil Loss Equation (erosion Model) |
| TDSHF | Time-dependent Screened Hartree-Fock |
| MHIDAS | Major Hazardous Incident Data Service (from UK Atomic Energy Authority) |
| NIMS | Negative Ion Mass Spectrometry |