| Acronym | Meaning |
| GIT | Gastrointestinal Tract |
| STMCTDHF | Spin-tensor Multiconfigurational Time-dependent Hartree-Fock |
| NFCR | National Foundation For Cancer Research |
| PPR | Projection Pursuit Regression |
| MPA | Multipurpose Additive |
| PUMP | Pure (alpha-spin-state) Unrestricted Moeller-Plesset Nth-order (wave Function) |
| USGS | United States Geological Survey |
| MRM | Multiple Reaction Monitoring |
| CEDRA | Controlled Simple Excitation For Dephasing Rotational Amplitudes |
| GSAC | Generalized Symmetry Adapted Cluster (theory) |