| Acronym | Meaning |
| IRIS | Integrated Risk Information System |
| LOGMO | Lowest Occupied Gaussian Molecular Orbital |
| LDQ | Linnett Double Quartet (equivalent To Nonpairing Spatial Orbital Theory) |
| ACT | Acoustic Charge Transport |
| QSO | Quasistellar Objects |
| QDT | Quantum-defect Theory |
| PVD | Physical Vapor Deposition |
| AABW | Antarctic Bottom Water |
| MIC | Methyl Isocyanate |
| DC | Blood-air Distribution Coefficient |