| Acronym | Meaning |
| OPLC | Overpressured Layer Chromatography |
| DXRL | Deep X-ray Lithography |
| CIT | California Institute Of Technology |
| CMO | Complex Molecular Orbital Method |
| APD | Action Potential Duration |
| ORPI | Off-resonance Proton Irradiation |
| NDWAC | National Drinking Water Advisory Council |
| QSR | Quality Status Report (of North Sea Task Force) |
| VCC | Variable Curvature Coordinates (in Calcns. On Mol. Vibrations) |
| MSO | Modified Slater Orbital |