| Acronym | Meaning |
| RPSA | Rapid Pressure Swing Adsorption |
| ICGCC | Integrated Coal Gasification Combined Cycle Plant |
| PSS | Perturbed Stationary State |
| HEMT | High Electron Mobility Transistor |
| INDO/SP | Intermediate Neglect Of Differential Overlap/spin Polarization |
| ACI | Alloy Casting Institute |
| VU-CC | Valence Universal-coupled Cluster |
| RCS | Reaction Control System |
| DPAV | Differential Pulse Adsorption Voltammetry |
| SNCR | Selective Noncatalytic Reduction |