| Acronym | Meaning |
| AISI | American Iron And Steel Institute |
| NOHS | National Occupational Hazard Survey |
| NOS | Not Otherwise Specified |
| AGI | American Geological Institute |
| IKES | Ion-kinetic-energy Spectroscopy |
| FARM | Fixed-angle Reactor Model (in Quantum Calcns. On Reactive Scattering) |
| HAL | Health Advisory Level |
| RHFR | Relativistic Hartree-Fock-Roothaan |
| APSGF | Antisymmetrical Product Of Strongly Orthogonal Group Functions (a Wave Function) |
| LEPD | Low Energy Photon Detector |