| Acronym | Meaning |
| LCHAO | Linear Combination Of Hybrid Atomic Orbitals |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| FOLZ | First-order Laue Zone |
| STS | Scanning Tunnelling Spectroscopy |
| WECC | Western European Calibration Cooperation |
| NSTA | National Science Teachers Association |
| NDT | Nil Ductility Temperature |
| TPSR | Temp.-programmed Surface Reaction |
| CANMET | Canada Centre For Mineral And Energy Technology |
| PBFFF | Potential Barrier Field-flow Fractionation |