| Acronym | Meaning |
| QDA | Quadratic Discriminant Analysis |
| AO | Atomic Orbital |
| EKMA | Empirical Kinetic Modeling Approach (in Air Pollution) |
| QBM | Quantal Brownian Motion (model) |
| RT-PCR | Reverse Transcription-polymerase Chain Reaction |
| MS/MS | Multistage Mass Spectrometry |
| PTGC | Programmed-temperature Gas Chromatography |
| CICIS | Chemicals In Commerce Information System |
| TBSI | N-tert-butyl-2-benzothiazyl Sulfenimide |
| SUVR | Solar Ultraviolet Radiation |