| Acronym | Meaning |
| TDMF | Time-dependent Mean Field |
| CITAC | Cooperation On International Traceability And Analytical Chemistry |
| FNO | Frozen Natural Orbital |
| CEC | Commission Of The European Communities |
| DLAS | Diode Laser Absorption Spectroscopy |
| CIRA | COSPAR International Reference Atmosphere |
| AA | Assistance Administration |
| DSCF | Direct Self-consistent Field |
| CFFV | Clean Fuel Fleet Vehicle |
| AEOS | Advanced Electro-Optical System |