| Acronym | Meaning |
| ESIS | European Structural Integrity Society |
| DGD | Decision Guidance Documents |
| SEMI | Semiconductor Equipment And Materials Institute |
| API | American Petroleum Institute |
| NEVE | Nonempirical Valence Electron Method |
| ICF-CI | Interacting Correlated Fragment-CI (wave Function) (see Also SA-MCSCF) |
| FASSST | FAst Scan Submillimeter Spectroscopy Technique |
| FIGE | Field Inversion Gel Electrophoresis |
| NDDN | National Dry Deposition Network (US EPA) |
| PBPK | Physiologically Based Pharmacokinetic |