| Acronym | Meaning |
| NRW | Null Reflecting Water |
| AGI | American Geological Institute |
| RVCM | Renormalized Virtual-crystal Method (for Electronic Structure) |
| CCD | Counter Current Decantation |
| HTGR | High-Temperature Gas Reactor |
| IAHR | International Association For Hydraulic Research |
| DTL | Drift Tube Linac |
| STAIRS | Storage And Information Retrieval System |
| FV-MC-SCF | Full Valence Multiconfiguration Self-consistent Field |
| CSD | Cortical Spreading Depression |