| Acronym | Meaning |
| NQCC | Nuclear Quadrupole Coupling Constants |
| APG | Antisymmetrized Product Of Geminals (wave Function) |
| ICSH | Interstitial Cell-stimulating Hormone |
| ECS-EP | Energy-corrected Sudden-exponential Polynomial (scaling Law) |
| AEGIS | ATM European Group For Improvement Of Scenarios |
| CSA | Canadian Standards Authority |
| LD | Laser Diode |
| HPT | High Precision Translator |
| LCI-SCSCFMO | Limited Configuration Interaction Single-configuration SCF MO |
| HSAB | Hard And Soft Acids And Bases |