| Acronym | Meaning |
| CCC | Correlated Coupled Cluster (quantum Calcn. Method) |
| FPGS | Folylpolyglutamate Synthetasepar |
| NAPCA | National Air Pollution Control Administration |
| TOSS | Total Suppression Of Sidebands |
| QIT | Quadrupole Ion Trap |
| RPEHMO | Relativistically Parametrized Extended Hueckel MO |
| SPAES | Spin Polarized Auger Electron Spectroscopy |
| IASCC | Irradiation-assisted Stress-corrosion Cracking |
| DAFNE | Double Annular Factory For Nice Experiments |
| GMAV | Genus Mean Acute Value |