| Acronym | Meaning |
| IE | Ionization Energy |
| HMPGI | Hybrid Multiple-prism Grazing-incidence |
| CISDQ | Configuration Interaction With Single |
| SSSD | Small-scale, Short-duration |
| IPA | International Pharmaceutical Abstracts |
| IFSD | In-Flight Shutdown |
| CRU | Constitutional Repeating Unit |
| MOSS | Multilayer Optical Scanning Spectrometer |
| GCW | Groundwater Circulation Well |
| EDCS | Energy Distribution Curve Spectroscopy |