| Acronym | Meaning |
| IALLW-CAT | Isotope Area Liquid Low-level Waste Collection And Transfer |
| RIS | Rotational Isomeric State |
| WSTCM | Watson-sphere Terminated Cluster Model (in Electronic-structure Calcns. On Crystal Defects) |
| MECS | Manufacturing Energy Consumption Survey (DOE) |
| BIF | Banded Iron-formation |
| MAG | Metal Arc Gas (welding) |
| EQTC | Environmental Quality Target Concentration |
| CIR | Cylindrical Internal Reflection |
| RPL | Radio Photoluminescence |
| BTS | British Toxicology Society |