| Acronym | Meaning |
| PFA | Principal Factor Analysis |
| WRV | Water Retention Value [of Cellulose Pulps For Paper Manufacture] |
| SAF | Symmetry Adapted Function (in CI Calcns.) |
| COPNA | Condensed Polynuclear Aromatics |
| ASTDR | Agency For Toxic Substances And Disease Registry |
| LSRA | Least-squares Regression Analysis |
| IPA | Inverted Perturbation Approach (in Mol. Potential-energy Curves Calcn.) |
| TSA | Thermal Swing Adsorption |
| COMFA | Comparative Molecular Field Analysis |
| MAST | Mega-Amp Spherical Tokamak |