| Acronym | Meaning |
| SCIBM | Semiclassical Infinite-barrier Model |
| RIFM | Research Institute For Fragrance Materials |
| PIRI | Photoinduced Rydberg Ionization |
| WSGR | Water Gas Shift Reaction |
| ESMO | Excited-state Molecular Orbital |
| MNDO/H | MNDO For H-bonded Systems |
| NORM | Naturally Occurring Radioactive Material(s) |
| ISEA | International Society For Exposure Analysis |
| PEANUT | Phase-inverted Echo-amplitude Detected Nutation |
| DPA | Displacement Per Atom |