| Acronym | Meaning |
| APWR | Advanced Pressurized Water Reactor |
| NCHGR | National Center For Human Genome Research |
| CCA | Coupled-cluster Approach |
| OIA | Office Of International Activities |
| EA-EOMCC | Electron Attachment-equation Of Motion Coupled Cluster |
| IPC | Ischemic Preconditioning |
| IZA | International Zeolite Association |
| WAMMAS | Waste Minimization Management Advisory System |
| CMC | Conditional Moment Closure [model] |
| FIA | Fluorescence Immunoassay |