| Acronym | Meaning |
| GSA | Generator-state Approach (in Many-body Quantum Theory) |
| GA | Glauber Approximation (in Electron-atom Scattering) |
| SEPT | Secular Equation (with) Perturbation Theory |
| EINP | Energy-independent Nonlocal Pseudopotential |
| CIPO | Canadian Intellectual Property Office |
| RECP | Relativistic Effective-core Potential |
| ES | Emission Spectroscopy (technique Suffix) |
| CADD | Computer Aided Drafting And Design |
| GO | Generalized Overlap |
| SPMN | Soil Potentially Mineralizable Nitrogen |