| Acronym | Meaning |
| SEE | Static Exact Exchange (approxn. In Electron-mol. Scattering) |
| CFSS | Constant-final-state Spectroscopy |
| CCMST | Co-ordinating Committee On Marine Science And Technology (UK) |
| ESO | European Southern Observatory |
| LSDXC | Local-spin-density-exchange-correlation (for Mol. Property) |
| CFCMC | Continuous Fiber Ceramic Matrix Composites |
| QSEX | Quadrature Selective Excitation |
| INQUA | International Association For Quaternary Research |
| CFBC | Circulating Fluidized Bed Combustion |
| MRISSA | Municipal Refuse Incineration System Simulation And Analysis Model |