| Acronym | Meaning |
| FCM | Finite-cluster Model (for Calcns. On Electromigration) |
| PRP | Prion Protein |
| NIGET | Neutron-induced Gamma-ray Emission Tomography |
| GEOS | General Earthquake Observation System |
| ESP | Elimination Of Solvation Procedure |
| VFA | Volatile Fatty Acid |
| LOSC | Law Of The Sea Convention |
| NMMO | N-methylmorpholine N-oxide |
| CMAS | Completely Mixed Activated Sludge |
| ICLAS | Intracavity Laser Absorption Spectroscopy |