| Acronym | Meaning |
| BPTI | Bovine Pancreatic Trypsin Inhibitor |
| DNS | Direct Numerical Simulation |
| APCD | Air Pollution Control Device |
| CS | Centrifugal Sudden (approximation) |
| JESSI | Joint European Submicron Silicon Initiative |
| CRT | Continuously Regeneration Trap |
| SIPP | Sodium Iron Pyrophosphatepar |
| SCPT | Self-consistent-perturbation Theory |
| IFPM | Independent Fermi Particle Model (in Atom-ion Impact Ionization) |
| AQIRP | Auto/Oil Air Quality Improvement Research Program |