| Acronym | Meaning |
| BCGF | B Cell Growth Factor |
| GDT | Generalized Dilatation Transformation (method In Study Of Stationarity Principle For At. And Mol. Resonance States) |
| RQDO | Relativistic Quantum Defect Orbital (method In Calcns. Of Oscillator Strengths) |
| CINDORU | Cluster INDO Restricted-unrestricted |
| EKF | Extended Kalman Filter |
| MCNDO | Modified Complete Neglect Of Differential Overlap |
| ASIS | Aromatic Solvent-induced Shift |
| TCSCF | Two-configuration Self-consistent Field Procedure |
| MMA | Manual Metal Arc Welding |
| ELKM | Extended Lumped Kinetic Model |