| Acronym | Meaning |
| OWRS | Office Water Regulations And Standards (US EPA) |
| MEPAS | Multimedia Environmental Pollution Assessment System |
| DICD | Dispersion-induced Circular Dichroism |
| PML | Promyelocytic Leukemia |
| LSTH | Liu-Siegbahn-Truhlar-Horowitz (potential-energy Surface) |
| IOS | Infinite Order Sudden Approximation |
| HERS | High Energy Range Spectrometer |
| SILC | Stress-induced Leakage Current |
| GOE | Gaussian Orthogonal Ensemble (of Random Matrixes In Quantum Chaoticity Study In At. And Nuclear Energy Levels) |
| AQS | Air Quality Subsystem (subsystem Of AIRS) |