| Acronym | Meaning |
| FOM | Forced Oscillator Model |
| DPIA | Digital Printing And Imaging Association |
| HIAA | Hydroxyindoleacetic Acid |
| EBS | Extended Basis Set |
| IECA | International Erosion Control Association |
| FO-NACME | First-order Nonadiabatic Coupling Matrix Elements |
| TBNEM | Tight-binding Nearly Free Electron Model |
| MPDS | Moment-polarized Dirac-Slater |
| GLP | Good Laboratory Practices (US FDA) |
| CIR | Cylindrical Internal Reflection |