| Acronym | Meaning |
| STAS | Scientific And Technical Attribute And Element Set |
| SIMPEDS | Safety In Mines Personal Dust Sampler |
| SAA | Serum Amyloid A |
| TDD | Telecommunications Device For The Deaf |
| TDI | Tolerable Daily Intake |
| REES | Red Edge Excitation Shift |
| NPC | Nuclear Pore Complex |
| BERG | Building Effects Review Group |
| SAW | Submerged Arc Welding |
| SCSOPW | Self-consistent Symmetrized Orthogonalized-plane-wave |