| Acronym | Meaning |
| MOM | Modified Operator Method (for Energy-level Calcns.) |
| RBC | Rotating Biological Contactor |
| DCCI | Dissociation-consistent Configuration Interaction |
| MA | Malonic Acidpar |
| DNS | Direct Numerical Simulation |
| GC | Gas Chromatography |
| COSE | Committee On Optical Science And Engineering |
| SC-SI | Semiclassical State Interaction (method For Solving Schroedinger Equation) |
| MCT | MOS Controlled Thyristor |
| PIRSS | Polarization IR Surface Spectroscopy |