| Acronym | Meaning |
| BTCA | Best Technology Currently Available |
| ELF | Electron Localization Function |
| ACTS | Advisory Committee On Toxic Substances |
| IAG | International Association Of Geodesy |
| WSTCM | Watson-sphere Terminated Cluster Model (in Electronic-structure Calcns. On Crystal Defects) |
| ADPT | Auger Depth Profiling Technique |
| BMI | Body Mass Index |
| BAL | Broad Absorption Line |
| LISA | Library And Information Science Abstracts |
| WILT | Waste Interface Leaching Test |