| Acronym | Meaning |
| VOA | Variable Optical Attenuator |
| IMEP | International Measurement Evaluation Program |
| ANSIG | Assignment Of NMR Spectra By Interactive Graphics |
| ALICE | Acid-labile Isotope-coded Extractants |
| ULTRA | Underground Leak Transport Assessment Model |
| NHANES | National Health And Nutrition Examination Survey |
| FNAL | Fermi National Accelerator Laboratory |
| DVR-REV | Discrete Variable Representation-ray Eigenvector |
| ONCV | Orthonormality Constrained Variation (quantum Method) |
| NPS | National Park Service (US) |