| Acronym | Meaning |
| CVBM | Conduction-valence-band Model (in Electronic Structure Calcns.) |
| CCR | Close-coupling R-matrix |
| IOSVR | Infinite Order Sudden Vib-rotor Approximation |
| LCMBPT | Linked Cluster Many Body Perturbation Theory |
| AES | American Electroplating Society |
| NIWR | National Institute For Water Research (South Africa) |
| OD | Order-Disorder (in Mineral Structure) |
| BOPF | Basic Oxygen Process Furnace |
| HPCIC | High-performance Chelation Ion Chromatography |
| STOAT | Sewage Treatment Operation And Analysis Over Time [model] |