| Acronym | Meaning |
| PEMA | Pseudoeffective Mass Approxn. (for Impurity Energy Levels In Semiconductors) |
| NDSC | Network For The Detection Of Stratospheric Change |
| QBO | Quasi-biennial Oscillation (atm.) |
| MRI | Magnetic Resonance Imaging |
| ANF | Atrial Natriuretic Factor |
| ZERI | Zero Emissions Research Initiative |
| VS | Volatile Solids |
| BOM | Bond Orbital Model |
| AMA | American Medical Association |
| QSPR | Quantitative Structure Property Relationship |