| Acronym | Meaning |
| HIERD | Heavy Ion Elastic Recoil Detection |
| SOEH | Scaled One-electron Hamiltonian (in SCF Calcns. On Mols.) |
| OIG | Office Of Inspector General |
| MLCFA | Maximum Likelihood Common Factor Analysis |
| SECH | Screened Exchange Plus Coulomb Hole Method |
| ORD BBS | ORD Electronic Bulletin Board System |
| CEPA | Coupled Electron Pair Approximation |
| CRQL | Contract Required Quantitation Limit |
| ESEEM | Electron Spin Echo Envelope Modulation |
| LEACH | Leaching Evaluation Of Agricultural Chemicals |