| Acronym | Meaning |
| PHDF | Polyhalogenated Dibenzofuran(s) |
| GKS | Gaspar-Kohn-Sham (potential For Exchange And Correlation In Band Structure Calcns.) |
| SO-LAPW | Spin-orbit (coupling) Linearized Augmented Plane Wave |
| ERCP | Endoscopic Retrograde Cholangiopancreatography |
| ISEE | International Society For Environmental Epidemiology |
| UNOS | United Network For Organ Sharing |
| EEM | Episodic Event Model (of Acidification) |
| NBO | Natural Bond Order |
| MDI | Modified Dipole Interaction(model For Mol.-polarizability Calcn.) |
| HIM | Hydroxy Interlayered Minerals (clay Minerals) |