| Acronym | Meaning |
| APO | Aq.-phase Oxidn. |
| HPLS | Hierarchical Partial Least Squares |
| CAI | Computer Aided Instruction |
| MCHC | Mean Corpuscular Hemoglobin Concentration (occupational Exposure) |
| LCTV | Liquid Crystal Television |
| ISO | IR Space Observatory |
| MMD | Mass Medium Diameter (particle Size) |
| EUV | Extreme Ultraviolet |
| IMO | Intermolecular Mol. Orbital |
| TTP | Thrombotic Thrombocytopenic Purpura |