| Acronym | Meaning |
| CERI | Center For Environmental Research Information |
| IMS | Incomplete Model Space (in Many-body Calcns.) |
| HAGAR | High Altitude Gas Analyzer |
| SITE | Superfund Innovative Technology Evaluation |
| DTS | Diametral Tensile Strength |
| RTDM | Rough Terrain Dispersion Model (air Quality) |
| EPCRA | Emergency Planning And Community Response Act |
| FAEC | Factor Analysis With Equilibrium Constraints |
| MRA | Magnetic Resonance Angiography |
| HFFC | Hartree-Fock Frozen Core |