| Acronym | Meaning |
| ECRA | Economic Cleanup Responsibility Act |
| STM | Space-translation Method (in Atomic Collision Calcn.) |
| OE | Office Of Enforcement |
| MOMO | Maximum Overlap Molecular Orbital |
| TDRH | Time-dependent Rotated Hartree (theory) |
| GRRR | Graduated Response For Risk Reduction |
| LOF | Lack Of Fit |
| IPAN | Imaging Passive-active Neutron |
| AAAS | American Association For The Advancement Of Science |
| MPB | Morphotropic Phase Boundary |