| Acronym | Meaning |
| IRC | Intrinsic Reaction Coordinate |
| PSDF | Power Systems Development Facility |
| CVOC | Chlorinated Volatile Organic Compound |
| UW-PG | Uniformly Weighted Planar Grid (method In Calcns. Of Electron-momentum Distributions) |
| ICRF | Imperial Cancer Research Fund |
| IF DRM | Inversion-free Direct Recursion Method (for Surface Electronic Structure) |
| RQ | Reportable Quantity |
| COP | Cyclic Olefin Polymers |
| APA | Alkaline Phosphatase Activity |
| RMTO | Relativistic Muffin-tin Orbital |