| Acronym | Meaning |
| FSR | Free Spectral Range |
| FIBC(A) | Flexible Intermediate Bulk Container (Association) [bulk Bag] |
| ALMS | Atomic Line Molecular Spectroscopy |
| RITG | Radiatively Important Trace Gases |
| CEEC | Capillary Electrophoresis/electrochemistry |
| IDMA | Isotopic Dilution And Mass Analysis |
| DMDHEU | Dimethyloldihydroxyethylene Urea |
| AFRL | Air Force Research Laboratory |
| IPEM | Ion-photon Emission Microscopy |
| PLS | Partial Least Squares |