| Acronym | Meaning |
| BMAW | Bare Metal Arc Welding |
| APECED | Autoimmune Polyendocrinopathy-candidiasis-ectodermal Dystrophy |
| ESIG | European Solvents Industry Group |
| ELI | Extra Low Interstitial |
| FRED | Flexible Regional Emissions Data System |
| CHAOS | Canadian High Acceptance Orbit Spectrometer |
| GCLSDA | Gradient-corrected Local Spin Density Approximation |
| USGCRP | U.S. Global Change Research Program |
| DCFCI | Density-constrained Full-configuration-interaction |
| NIA | National Institute On Aging |