| Acronym | Meaning |
| WPCP | Water Pollution Control Plant |
| GWB | Gopinathan-Whitehead-Bogdanovic (Fermi-hole Parameters) |
| HIT | Hazard Information Transmission |
| UCCD | (spin) Unrestricted Coupled Cluster (with) Double (excitations) |
| TNF | Tumor Necrosis Factor-alpha |
| FPKKR | Full-potential Korring-Kohn-Rostoker |
| CMP | Cartilage Matrix Protein |
| ADC(N) | Algebraic Diagrammatic Construction (method In Nth-order Perturbation Theory) |
| SXPS | Soft X-ray Photoelectron Spectroscopy |
| BCS | British Chemical Standard |