| Acronym | Meaning |
| RHO | Reduced Hamiltonian Orbital Method |
| RMP2 | Restricted Moeller-Plesset Second-order (perturbation Theory) |
| CISD | Configuration Interaction With Single And Double Excitation |
| ELS | Energy Loss Spectroscopy |
| BAL | Blood Alcohol Level |
| AF | Alternating Field Demagnetization |
| NCRP | National Council On Radiation Protection |
| LCPLS | Logcontrast Partial Least Squares |
| IGF | Insulin-like Growth Factor |
| ECM | Embedded Cluster Method (in Electronic-structure Calcns.) |