| Acronym | Meaning |
| LINE | Long Interspersed Element |
| BHT | Bottom-hole Temperature |
| PMC-SCF | Pair Multiconfiguration-SCF (with Electron Pair Optimization) |
| NISO | National Information Standards Organization |
| RBCOD | Readily Biodegradable Chemical Oxygen Demand |
| SOD | Superoxide Dismutase |
| HEDTA | Hydroxyethylethylenediaminetriacetic Acid |
| TERT | Telomerase Reverse Transcriptase |
| NRHF | Numerical Restricted Hartree-Fock |
| DAF | Distributed Approximating Functional (in Study Of Quantal Wave-packet Propagation) |