| Acronym | Meaning |
| HNF | Hepatocyte Nuclear Factor |
| PEYS | Photoelectron Yield Spectroscopy |
| SDQ-MBPT | Single (and) Double (and) Quadruple (substituted States) Many-body Perturbation Theory |
| PNN | Probabilistic Neural Network |
| BRFI | Brewing Research Foundation International |
| DMC | Dough Molding Compound |
| STMCTDHF | Spin-tensor Multiconfigurational Time-dependent Hartree-Fock |
| RPP | Renal Perfusion Pressure |
| PMC | Percent Modern Carbon |
| NLXC | Nonlocal Exchange Correlation (potential) |