| Acronym | Meaning |
| OASCR | Office Of Advanced Scientific Computing Research |
| CTM | Conditional Test Method |
| IAHS | International Association Hydrological Sciences |
| MSP | Manganese Stabilizing Protein |
| CHIEF | Clearinghouse For Inventories And Emission Factors |
| GISAXS | Grazing Incidence Small Angle X-ray Scattering |
| SBA | Second Born Approximation |
| EWPCA | European Water Pollution Control Association |
| SIEC | Spherical Inertial Electrostatic Confinement |
| HSE | Health And Safety Executive |