| Acronym | Meaning |
| SCEM | Semiclassical Self-consistent Eikonal Method |
| RCO | Regenerative Catalytic Oxidizer |
| TPQ | Threshold Planning Quantity |
| TAI | Thermal Alteration Index |
| SCS | Semiclassical Coupled-states |
| ALMS | Atomic Line Molecular Spectroscopy |
| HFMD | Hellmann-Feynman Mol.-dynamics (method In Electronic Structure And Geometry Calcns.) |
| NACEPT | National Advisory Council For Environmental Policy And Technology |
| RSSC-CPA | Real-space-scattering Cluster Coherent Potential Approxn. |
| EHC | Environmental Health Committee |