| Acronym | Meaning |
| MSPO | Method Of Successive P |
| FAGS | Federation Of Astronomical And Geophysical Services |
| CA | Collision Activation |
| EPIC | Erosion-productivity Impact Calculator |
| NLM | National Library Of Medicine |
| IRIS | Incorporated Research Institutes For Seismology |
| RMA | Rocky Mountain Arsenal (Colorado) |
| AOMA | American Occupational Medical Association |
| VIF | Valency-point Interaction Formula (in Graph Theory With At. And Mol. Orbitals) |
| UVBIS | Ultraviolet Bremsstrahlung Isochromat Spectroscopy |