| Acronym | Meaning |
| IIW | International Institute Of Welding |
| SSQW | Strained Single Quantum Well |
| TGCE | Thermal Gradient Capillary Electrophoresis |
| NSF | Near-surface Fractionated (mantle) |
| FTC | Federal Trade Commission |
| HLNCC | High Level Neutron Coincidence Counter |
| DI | Direct Injection (engine; Diesel) |
| PZT | Lead Zirconate Titanate |
| SST | Sea Surface Temperature |
| PRTR | Pollutant Release And Transfer Register |