| Acronym | Meaning |
| EC | Enzyme Commission |
| VPSA | Vainshtein-Presnyakov-Sobelman Approxn. (for Excitation In Atom-ion Collisions) |
| HOPG | Highly Oriented Pyrolytic Graphite |
| IDA | Interdigitated Array (microelectrodes) |
| CMRA | Chemical Migration And Risk Assessment |
| DWS | Diffusing-wave Spectroscopy |
| MSD | Mass Selective Detector |
| VRLA | Valve-regulated Lead-acid (batteries) |
| SCCR | Self-consistent Current Relaxation (in Electronic Dynamic Structure Factor Calcns.) |
| SU-MRCC | State Universal-multireference Coupled Cluster |