| Acronym | Meaning |
| NES | Nuclear Export Signal |
| HIMAC | Heavy Ion Medical Accelerator In Chiba |
| HNE | Human Neutrophil Elastase |
| CGC | Capillary Gas Chromatography |
| NWS | National Weather Service |
| FWE | Faddeev-Watson Expansion (for T-operator In Atomic Collisions) |
| CLS | Classical Least-squares |
| HFA | Humic And Fulvic Acids |
| DAPS | Disappearance Potential Spectroscopy |
| CVTST | Canonical Variational Transition-state Theory |