| Acronym | Meaning |
| AA | Atomic Absorption |
| SAF | Symmetry Adapted Function (in CI Calcns.) |
| PEMFC | Polymer Electrolyte Membrane Fuel Cell |
| OEMO | One Electron Molecular Orbital |
| CINDO | Closed Shell Intermediate Neglect Of Overlap Method |
| SSC | Sulfide Stress Cracking |
| PNO-CEPA | Pseudonatural Orbital-coupled Electron Pair Approximation |
| MIP | Major Intrinsic Protein |
| QISM | Quantum Inverse Scattering Method |
| PSD | Pore Size Distribution |