| Acronym | Meaning |
| RTIL | Room-temperature Ionic Liquid |
| CITAC | Cooperation On International Traceability And Analytical Chemistry |
| LOA | Linear Optical Amplifier |
| MF | Membrane Filtration |
| OSPARCOM | Oslo And Paris Commission [Environmental Regulations For The European Community] |
| SLE | Stochastic Liouville Equation (in Quantum Statistical Mechanics) |
| DLM | Diffuse Layer Model (of Adsorption) |
| BIFL | Burst Integrated Fluorescence Lifetime |
| INCRA | International Cooper Research Association |
| ACRE | Automatic Climatological Recording Equipment |