| Acronym | Meaning |
| GCOS | Global Climate Observing System (WMO |
| HSDB | Hazardous Substances Data Bank (NLM) |
| ARIC | Acid Rain Information Clearinghouse |
| LSV | Linear Sweep Voltammetry |
| NCAP | Noncriteria Air Pollutants |
| UHP | Ultra High Purity |
| TMMC | Tetramethylammonium Manganese Trichloride |
| GPM | Generalized Perturbation Method (in Electronic Theory Of Phase Stability Of Alloys) |
| EIP | Economic Incentive Program |
| HMC SCF | Hybrid Multiconfiguration Self-consistent Field |