| Acronym | Meaning |
| MWCO | Molecular Weight Cut-off (in Membrane |
| AIGER | American Industry Government Emissions Research Consortium |
| CASPT2 | Complete Active Space With Second-order Perturbation Theory |
| TST-CEQ | Transition State Theory-collinear Exact Quantum (method For Reactive Collisions) |
| PMP | Peroxisomal Membrane Protein |
| ETEAO | Even-tempered Exponential Atomic Orbital |
| ESE | Electron Spin Echo |
| PTR-MS | Proton Transfer Reaction-mass Spectrometry |
| CMBR | Cosmic Microwave Background Radiation |
| SRM | Single Residue Method |