| Acronym | Meaning |
| PTR | Proton Transfer Reaction |
| WIG | W-inert Gas Welding |
| HBT | Heterojunction Bipolar Transistor |
| LET | Light-emitting Transistor |
| CHEC | Commonwealth Human Ecology Council |
| DAIM | Deformed Atoms In Molecules |
| CA | Corrective Action |
| DSW | Dirac Scattered-wave (often As SCF-X(alpha)-DSW Method) |
| SPP | Surface Plasmon Polariton |
| DARTAB | Dose And Risk Assessment Tabulation |