| Acronym | Meaning |
| SANDS | Stratospheric Aitken Nuclei Detection System |
| NODS | NASA Ocean Data System |
| CFF-SCF-PI-C | Consistent Force Field-SCF-PI-configuration Interaction |
| UAM-IV | Urban Airshed Model Version IV |
| VOIE | Valence Orbital Ionization Energy |
| VOA | Volatile Organic Aromatic Compounds |
| VEEH | Variable Electronegativity Extended Hueckel Method |
| PTCR | Positive Temperature Coefficient Of Resistance (of Semiconductors) |
| RECP-CVC | Relativistic Effective-core Potential With Core-valence Correlation |
| HCCI | Homogeneous Charge Compression Ignition |