| Acronym | Meaning |
| SLP | Sea Level Pressure |
| MPK | Methyl Propyl Ketone |
| IWRA | International Water Resources Association (USA) |
| NLP | Natural Language Processing |
| QDWT | Quantum Density-wave Theory (in Theory Of Freezing Of Quantum Systems) |
| AOT | Aerosol OT (surfactant) (reg: 577117) |
| CIPAC | Collaborative International Pesticides Analytical Council |
| EBL | Extragalactic Background Light |
| DQC | Decagonal Quasicrystal |
| CCSDTQP | CCSDTQ (and) Pentuple (excitations) |