| Acronym | Meaning |
| GCO | General Coupling Operator (in Calcns. Of Vector Coupling For Atoms And Ions) |
| SCP-IOS | Semiclassical Perturbation-infinite Order Sudden |
| PO-DVR-REV | Potential Optimized-discrete Variable Representation-ray Eigenvector |
| PCILOCC | PCILO For Crystal Calculations |
| HFRW | High Frequency Resistance Welding |
| ASFF | Aerated Stationary Or Submerged Fixed-film (wastewater Treatment) |
| NRA | Neutron Reaction Analysis |
| CCW | Constituent Concentrations In Waste |
| SFMS | Sector Field Mass Spectrometry |
| CRTA | Controlled Rate Thermal Analysis |