| Acronym | Meaning |
| DFW | Diffusion Welding |
| CSTBR | Continuous Stirred Tank Bioreactor |
| FCCU | Fluidized Catalytic Cracking Unit |
| I-TEQ | International Toxic Equivalent |
| RPS | Reemitted Positron Spectroscopy |
| ENMR | Electrophoretic NMR |
| CEELS | Core Electron Energy Loss Spectroscopy |
| PES | Photoelectron Spectroscopy |
| HWR | Heavy Water Reactor |
| WLE | Wigner-Liouville Equation (in Study Of Quantum Dynamics) |