| Acronym | Meaning |
| MSH | Melanocyte-stimulating Hormone |
| TSW | Torsional Spin Wave (type Of Hartree-Fock Wave Function) |
| MSO | Maximum Similarity (spin) Orbital |
| COSPAR | Committee On Space Research |
| IMPACT | Integrated Model Of Plumes And Atmosphere In Complex Terrain |
| GICS | Grants Information And Control System |
| UAM | Urban Airshed Model |
| PABA | P-aminobenzoic Acid |
| ARM | Atomic Resolution Microscope |
| PIC | Public Information Center |