| Acronym | Meaning |
| ACTS | Advisory Committee On Toxic Substances |
| DWTM | Distorted Wave T-matrix (for Electron-atom Scattering) |
| VIM | Video-intensified Microscopy |
| RD/RA | Remedial Design/Remedial Action |
| XGRS | X-ray/gamma-ray Spectrometer |
| IFM | Immunofluorescence Microscopy |
| UNCED | United Nations Conference On Environment And Development |
| PPAD | Parallel-plate Avalanche Detector |
| NBII | National Biological Information And Infrastructure |
| RW | Retonation Wave [backwardly Propagated Detonation Wave] |