| Acronym | Meaning |
| APL | Alternative Pollutant Limits |
| DCXRD | Double Crystal X-ray Diffraction |
| NRA | Nuclear Reaction Analysis (Rensselear Polytech) |
| ESA | Electrostatic Sector Analysis |
| THFA | Target Hartree-Fock Approximation |
| SCA | Self-consistent Approximation |
| MCPB | (4-(2-methyl-4-chlorophenoxy)butyric Acid |
| CTIOSA | Charge-transfer Infinite Order Sudden Approxn. |
| EA-EOMCC | Electron Attachment-equation Of Motion Coupled Cluster |
| CRU | Constitutional Repeating Unit |