| Acronym | Meaning |
| BOTDR | Brillouin Optical Time Domain Reflectometry |
| CCFL | Countercurrent Flow Limitation |
| PTC | Positive Temperature Coefficient [elec. Conducting Material] |
| PRENFLO | PRessurized ENtrained FLOw (process) [combustion And Gasification] |
| RXF | Refracted X-ray Fluorescence |
| IPPP | Iterative Pariser-Parr-Pople Method |
| LFT | Liver Function Test |
| NGPSA | Natural Gas Pipeline Safety Act |
| ACERC | Advanced Combustion Engineering Research Center |
| SMSO | Spinor Molecular Symmetry Orbital |