| Acronym | Meaning |
| CBI | Confidential Business Information |
| IFAS | Integrated Fixed-film Activated Sludge |
| NAPCA | National Air Pollution Control Administration |
| CCSOP | Close-coupling Second-order Potential (in Scattering) |
| SFE | Supercritical Fluid Extraction |
| RIE | Reactive Ion Etching |
| GIAO | Gage-independent Atomic Orbital |
| CCWP-J | Close Coupling Wave Packet [in Total Angular Momentum] J [representation] (for Collision Calcns.) |
| SMO | Statistical Model Of Overlap |
| FCVA | Filtered Cathodic Vacuum Arc |