| Acronym | Meaning |
| BAT | Biol. Tolerance Value (German Std.) |
| BMEP | Brake Mean Effective Pressure |
| IPT | Iterated Perturbation Theory |
| AAW | Air Acetylene Welding |
| BCG | Bacillus Calmette-Guerin |
| WDD | Weighted Density Distribution |
| LOF | Lack Of Fit |
| SCSAG | Small-curvature Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| MAOI | Monoamine Oxidase Inhibitor |
| AOQL | Average Outgoing Quality Limit |