| Acronym | Meaning |
| PTIS | Photothermal Ionization Spectroscopy |
| POES | Polar Orbiting Environmental Satellites |
| OPSE | Optically Pumped Stimulated Emission |
| HWHM | Half Width At Half-maximum |
| SFORD | Single Frequency Off Resonance Decoupling |
| CDFT | Current (as In C.d.) Density Functional Theory |
| HSDB | Hazardous Substances Data Bank (NLM) |
| IT | Integral Transform |
| CDRH | Center For Devices And Radiological Health |
| CWM | Coal Water Mixture |