| Acronym | Meaning |
| EPTC | Extraction Procedure Toxicity Characteristic |
| URG | Umweltrahmengesetz (German Environmental Protection Framework Law) |
| ONDOR | Optical Nuclear Double Resonance |
| SHE | Standard Hydrogen Electrode |
| HMM | Heavy Meromyosin |
| SQRD | Square Root Darwin Term (correction To T And V Operator) |
| SSE | Spinless Salpeter Equation |
| LCI-SCSCFMO | Limited Configuration Interaction Single-configuration SCF MO |
| VFF | Valence Force Field (in Electronic-structure Calcns.) |
| PAC | Powdered Activated Carbon |