| Acronym | Meaning |
| BLMO | Best Limited Basis Molecular Orbital |
| ERPA | Extended Random Phase Approximation |
| MDD | Maximum Daily Dose |
| MDSRS | Morphology-dependent Stimulated Raman Scattering |
| DPR | California Department Of Pesticide Regulation |
| RADREM | Radioactivity Research And Environmental Monitoring Committee |
| MSO | Modified Slater Orbital |
| ACD | Atmospheric Chemistry Division |
| UMINDO | Spin-unrestricted Modified Intermediate Neglect Of Differential Overlap |
| APM | Atom Probe Microanalysis |