| Acronym | Meaning |
| SAPW | Symmetrized Augmented Plane Wave |
| BVC | British Veterinary Codex |
| DOAS | Differential Optical Absorption Spectroscopy |
| EBL | Extragalactic Background Light |
| SORI | Sustained Off-resonance Irradn. |
| ERDEC | U.S. Army Edgewood Research |
| EFS | Elec. Field Stimulation |
| HRS | Hazard Ranking System |
| WAXD | Wide-angle X-ray Diffraction |
| PINN | Proposed International Nonproprietary Names (for Drugs) |