| Acronym | Meaning |
| SDSS | Sloan Digital Sky Survey |
| APPM | Atomic Parts Per Million |
| ALAU | Delta-aminolevulinic Acid Dehydratase In Urine (lead Poisoning Indicator) |
| SPEAR | Stanford Positron Electron Accelerating Ring |
| AACR | American Association For Cancer Research |
| RVCM | Renormalized Virtual-crystal Method (for Electronic Structure) |
| CLRTAP | Convention On Long-Range Transboundary Air Pollution |
| NGC | New General Catalog Of Nebula And Clusters Of Starspar |
| AMD | Acid Mine Drainage |
| WEEL | Workplace Environmental Exposure Limits |