| Acronym | Meaning |
| XCC | Expectation-value Coupled-cluster (in Correlation Energies And Electronic Properties Of Many-electron Systems Calcns.) |
| NDB | Nucleic Acid Database |
| SID | Surface Ionization Detector |
| INDO/S | INDO/spectroscopic Approxn. |
| LPC | Light Paraffin Conversion |
| GPT | Glutamic Pyruvic Transaminase |
| DRP | Dissolved Reactive Phosphorus |
| SPF | Simons-Parr-Finlan (potential Function) |
| QVE | Quasivibrational Energy (formalism In Multiphoton Dissocn.) |
| TDRH | Time-dependent Rotated Hartree (theory) |