| Acronym | Meaning |
| FEP | Free Energy Perturbation |
| GNMP | Generalized Nonlocal Model Potential |
| SILAR | Successive Ionic Layer Adsorption And Reaction |
| CIOS | Classical Infinite Order Sudden (in Atom-mol. Reaction Calcns.) |
| CEAREX | Coordinated Eastern Arctic Experiment |
| HSCT | Hematopoietic Stem Cell Transplantation |
| ECLSS | Environmental Control And Life Support System |
| COSS | Correlation Shift Scaling |
| PD | Photoelectron Diffraction |
| SOMBT | Second-order Many-body Theory |