| Acronym | Meaning |
| SCGP | Shell Coal Gasification Process |
| NEXAFS | Near-edge X-ray Absorption Fine Structure |
| JAK | Janus Kinase |
| ROHF | Restricted Open-shell Hartree-Fock |
| HKS | Hartree-Kohn-Sham (quantum Theory) |
| QFEP | Quantum Free Energy Perturbation (calcn. Method) |
| CFAST | Center For Field Analytical Studies And Technology |
| DAFS | Diffraction Anomalous Fine Structure |
| RNAP | RNA Polymerase |
| CIBS | Corrections To An Incomplete Basis Set (a Perturbation Theory) |