| Acronym | Meaning |
| MECI | Monoexcited Configuration Interaction |
| MPI | Mass Psychogenic Illness (in Indoor Air Pollution) |
| AASD | Anaerobic Activated Sludge Digestion |
| PSIT | Plasma Source Ion Trap |
| LMR | Laser Magnetic Resonance |
| LPME | Liquid-phase Microextraction |
| GTP | Guanosine 5'-triphosphate |
| BLMO | Boys Localized Molecular Orbital |
| FUMI | Function Of Mutual Information |
| PINS | Portable Isotopic Neutron Spectroscopy |