| Acronym | Meaning |
| NDOL(ND0-L) | Neglect Of Differential Overlap-azimutal Quantum Number (of Valence Ao's) |
| HVOF | High-Velocity Oxygen Fuel |
| ACR | Acute-Chronic Toxicity Ratio |
| EU | European Union |
| TRAP | Telomeric Repeat Amplification Protocol |
| SARS | Severe Acute Respiratory Syndrome |
| EDC | Endocrine Disrupting Chemical |
| SCC | Source Classification Code |
| GDE | Gas Diffusion Electrode |
| ISA | Ionic Strength Adjuster |