| Acronym | Meaning |
| QBO | Quantitative Basis Orbital (an MO Or AO) |
| EBEBO | Extended Bond Energy Bond Order (quantum Calcn. Method) |
| PAIS | Public Affairs Information Service |
| PEIS | Programmatic Environmental Impact Statement |
| BEI | Backscattered Electron Imaging |
| CJO | Chemical Journals Online |
| MFP | Magnetic Field Perturbative (method) |
| ACE | Aerosol Characterization Experiment |
| ART | Asphalt Residual Treatment |
| SAM | Stratospheric Aerosol Monitor |