| Acronym | Meaning |
| WFGD | Wet Flue Gas Desulfurization |
| QCP | Quantized Classical Path (method For Calcg. Quantum-mech. Rate Consts.) |
| CCS | Cold Cranking Simulator |
| GBS | Grain Boundary Sliding |
| HFRP | Hybrid Fiber Reinforced Plastics |
| NGST | Next Generation Space Telescope |
| PPM | Parts Per Million |
| SR-CCSD | Single Reference-CCSD |
| FCVA | Filtered Cathodic Vacuum Arc |
| TSDIA | Two-scale Direct-interaction Approximation [in Flow Energy Modeling] |