| Acronym | Meaning |
| NASN | National Air Sampling Network |
| ECETOC | European Center For Ecotoxicology And Toxicology Of Chemicals |
| PMN | Premanufacture Notice |
| WAMMAS | Waste Minimization Management Advisory System |
| CFAST | Center For Field Analytical Studies And Technology |
| NGC | New General Catalog Of Nebula And Clusters Of Starspar |
| VLSI | Very Large-scale Integration |
| CLAES | Cryogenic Limb Array Etalon Spectrometer |
| DCFCI | Density-constrained Full-configuration-interaction |
| RRT | Relative Retention Time |