| Acronym | Meaning |
| BFEM | Bright Field Electron Microscopy |
| ROSH | Registry Of Occupational Safety And Health |
| XCC | Expectation-value Coupled-cluster (in Correlation Energies And Electronic Properties Of Many-electron Systems Calcns.) |
| RODS | Records Of Decision System |
| LAPIS | Linden Atmosphere/Phytosphere Interaction Study |
| DSCEMS | Depth Selective Conversion Electron Moessbauer Spectroscopy |
| HL | Mustard-Lewisite Mixture |
| PDFT | Perturbation Density-functional Theory |
| CST | Central Standard Time |
| FRCA | Fire Retardant Chemicals Association |