| Acronym | Meaning |
| TMA | Thermomechanical Analysis |
| AEGL | Acute Exposure Guideline Level |
| MR-CI-PS | Multireference-CI-perturbatively Selected |
| UPS | Uninterrupted Power Systems (for Computer Networks) |
| OPPTS | Office For Prevention |
| EMEA | European Medicines Evaluation Agency |
| NSO | Natural Spin Orbitals |
| PTA | Plasma Transferred Arc |
| STMT | Superplastic Thermomech. Treatment |
| RDW | Relativistic Distorted Wave |