| Acronym | Meaning |
| ENSO | El Nino Southern Oscillation |
| FSQ | Full-spectrum Quantitation |
| LLIT | Liq.-liq. Intermol. Transfer |
| CGTO | Cartesian Gaussian-type Orbital |
| RHFS | Relativistic Hartree-Fock-Slater |
| LASCO | Large Angle Spectroscopic Coronograph |
| ZOAO | Zero Overlap Of Atomic Orbital Approxn. |
| BCNTF | Biofilm-Controlled Nitrifying Trickling Filter (for Wastewater Treatment) |
| PAC | P1-derived Artificial Chromosome |
| SCR | Selective Catalytic Reduction |