| Acronym | Meaning |
| CTIOSA | Charge-transfer Infinite Order Sudden Approxn. |
| CMF | Crossflow Microfiltration |
| HGHR | Human Growth Hormone Receptor |
| SS | Sewage Sludge |
| DQ-RSPT | Double And Quadruple Excitation Diagrams In Rayleigh-Schroedinger Perturbation Theory |
| MBESMO | Maximum Bond Energy Symmetry MO |
| CHEC | Commonwealth Human Ecology Council |
| ASM | Activated-sludge Model |
| LPVD | Laser Physical Vapor Deposition |
| HEC | Hydrogen Embrittlement Cracking |