| Acronym | Meaning |
| EEDF | Electron Energy Distribution Function |
| RKRVL | Rydberg-Klein-Rees-Vanderslice-Lakshman (for Potential Energy) |
| RHFR | Relativistic Hartree-Fock-Roothaan |
| BALR | Broad Absorption Line Region |
| ASF | Atomic Sensitivity Factor |
| SPIRIT | Spatial IR Imaging Telescope |
| TMC | Transition Metal Complex |
| IPNO | Independent-pair Natural Orbital |
| CCA | Coupled-cluster Approach |
| CAPP | Computer Aided Process Planning |