| Acronym | Meaning |
| CSR | Constant Sampling Rate |
| BCKD | Branched-chain Alpha-ketoacid Dehydrogenase |
| PMO | Perturbational Molecular Orbital |
| VDI | Verein Deutscher Ingenieure (German Engineers Society) |
| STN | Super Twisted Nematic |
| DENT | Double-edge Notched Tension |
| FMA | Failure-mode Analysis |
| CT | Charge Transfer |
| CIPSO | Configuration Interaction (with) Perturbation (including) Spin-orbit Coupling |
| APT | Atomic Polar Tensor (in Ir Spectra Calcn.) |