| Acronym | Meaning |
| QCA | Quantum-dot Cellular Automata |
| QCSE | Quantum-confined Stark Effect |
| APHA | American Public Health Association |
| AEI | Avalanche Electron Injection |
| JPO | Japanese Patent Office |
| ALR | Allergenic Effects |
| MCDF-EAL | Multiconfiguration Dirac-Fock-extended Average Level (for Energy Levels And Wave Functions Calcn. For Atoms) |
| XHV | Extremely High Vacuum |
| MECOP | Modified Electron Correlation Polarization (potential) |
| SAT | Sulfuric Acid Trihydrate (polar Stratosphere Cloud Aerosol) |