| Acronym | Meaning |
| TLV | Threshold Limit Value |
| SIOA | Surface-induced Optical Anisotropy |
| PIRU | Public Information Reference Unit |
| RICE | UK Regular Interlaboratory Counting Exchange (for Asbestos Analysis) |
| FPC | Fractional Parentage Coeff. (in Group-theor. Calcns.) |
| LHEA | Laboratory For High Energy Astrophysics |
| EGO | Exhaust Gas Oxygen |
| TDEMSE | Time-dependent Effective Mass Schroedinger Equation |
| MRA | Magnetic Resonance Angiography |
| OCH | Ochkur (approxn. In Electron-atom Scattering Calcns.) |