| Acronym | Meaning |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |
| DPPC | Dipalmitoyl Phosphatidylcholine |
| FIMS | Fine-split IR Multispectral Scanner (for Remote Sensing) |
| LSD-GX-SIC | LSD-GX-with Generalized Exchange-self-interaction Corrected |
| NERC | North American Electric Reliability Council |
| PHF | Periodic Hartree-Fock |
| BIF | Boilers And Industrial Furnaces (USEPA Rule) |
| ESD | Equiv. Spherical Diam. |
| PNO-CEPA | Pseudonatural Orbital-coupled Electron Pair Approximation |
| HFIR | High Flux Isotope Reactor |