| Acronym | Meaning |
| PCD | Polycrystalline Diamond |
| FCCU | Fluidized Catalytic Cracking Unit |
| ECHO | European Community Host Organization |
| TWSM | Two-way Shape Memory |
| TMJ | Temporomandibular Joint |
| ECS | Electroconvulsive Shock |
| ATF | Automatic Transmission Fluid |
| HSC | High Conversion Soaker (cracking) [petroleum Viscosity-breaking] |
| ACTS | Advisory Committee On Toxic Substances |
| IGES | Institute Of Global Environment And Society |