| Acronym | Meaning |
| SENB | Single Edge Notched Beam |
| SGPR | Specific Gas Production Rate |
| ESI | Ease-of-separation Index |
| MOMO | Maximum Overlap Molecular Orbital |
| LOEL | Lowest-Observed-Effect Level |
| RBA | Refined Born Approximation (for Atom-mol. Collisions) |
| ASQ | Axle Shaft Quality |
| SET | Single Electron Transistor |
| CAA | Clean Air Act Of 1970 |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |