| Acronym | Meaning |
| PEXAFS | Photoemission Extended X-ray Absorption Fine Structure |
| CSVC | Computer System Validation Committee |
| AFFF | Aqueous Film-forming Foam |
| PNN | Probabilistic Neural Network |
| CCL | Carotenoid-carrying Lipoprotein |
| AMPD | 2-amino-2-methyl 1 |
| CVMO | Cluster Valence Molecular Orbital |
| FRDS | Federal Reporting Data System |
| LIS | Lanthanide-induced Shift |
| AVIRIS | Airborne Visible-infrared Imaging Spectrometer |