| Acronym | Meaning |
| UMP | Unrestricted Moeller-Plesset |
| MESA | Mass Concentration Extinction Size Analyzer |
| CSF | Carcinogenic Slope Factor |
| POES | Polar Orbiting Environmental Satellites |
| SU-MRCC | State Universal-multireference Coupled Cluster |
| DODISS | Department Of Defense Index Of Specifications And Standards |
| PSNO | Pseudonatural Orbital |
| PFLT | Paint Filter Liquids Test |
| MHA | Mott-Hubbard-Anderson (model In Band-structure Calcns.) |
| ACCCI | American Coke And Coal Chemicals Institute |