| Acronym | Meaning |
| ASMS | American Society For Mass Spectrometry |
| FMAR | Ferromagnetic Antiresonance |
| GIPM/D | Ground State Inversion Potential Method Including Diffraction |
| OPGF | One-particle Green Function |
| GALT | Gut-associated Lymphoid Tissue |
| APR | Air-Purifying Respirator |
| FEBD | Fluid Extraction Biological Degradation Process For Organic Wastes |
| AQCC | Air Quality Control Center |
| PREVENT | Pacific Northwest Regional Visibility Expt. Using Natural Tracers |
| GCLDA | Gradient-corrected Local Density Approximation |