| Acronym | Meaning |
| QCT-IEQMT | Quasiclassical Trajectory-internal Energy Quantum Mechanical Threshold |
| ICTP | Telopeptide Of Type-I Collagen |
| ORPA | Optimized Random Phase Approximation |
| ERW | Electrical Resistance Welding |
| SNIFTIRS | Subtractively Normalized Interfacial Fourier Transform IR Spectroscopy |
| CBC | Circulating Bed Combustor (or Incinerator) |
| EU | Enzyme Unit |
| ISA | Ionic Strength Adjuster |
| ADS | Accelerator Driven System |
| FPLS | Field-programmable Logic Switch |