| Acronym | Meaning |
| CNDO/B | Complete Neglect Of Differential Overlap / Boyd |
| BTEX | Benzene, Toluene, Ethyl Benzene, And Xylene |
| LIBS | Laser-induced Breakdown Spectroscopy |
| CBF | Cerebral Blood Flow |
| GRACE | Gravity Recovery And Climate Experiment |
| RSCF | Relativistic Self-consistent Field |
| BBB | Blood-brain Barrier |
| KADP | Kentucky Acid Deposition Program |
| MCDF | Multi-configuration Dirac-Fock |
| CTDM | Complex Terrain Dispersion Model (air Quality) |