| Acronym | Meaning |
| SEP | Solar Energetic Particle (event) |
| MCP | Microchannel Plate |
| DCFT | Direct Coal-fired Turbine |
| ECPSSR | Energy-loss Coulomb-repulsion Perturbed-stationary-state Relativistic Theory |
| WWCOT | Whisker Wall Coated Open Tubular Column |
| ICF-CI | Interacting Correlated Fragment-CI (wave Function) (see Also SA-MCSCF) |
| ANTARES | Australian National Tandem For Applied Research |
| FEMP | Federal Energy Management Program |
| EUVL | Extreme Ultraviolet Lithography |
| TOTE | Tropical Ozone Transport Experiment |