| Acronym | Meaning |
| MCSX | Multiconfiguration Single Excitation |
| AQMP | Air Quality Management Plan |
| DWIA | Distorted-wave Impulse Approximation |
| OAQPS | Office Of Air Quality Planning And Standards |
| TOW | Time Of Wetting |
| DBD | DNA Binding Domain |
| EOSDIS | Earth Observing System Data Information System |
| LCAO LDA | LCAO-local Density Approxn. |
| IMS | Ion Mobility Spectrometry |
| XC | Exchange-coulomb Potential |