| Acronym | Meaning |
| ORFEUS | Orbiting Retrievable Far And Extreme Ultraviolet Spectrometers |
| KKT | Kramers-Kronig Transformation |
| NIMBY | Not In My Backyard |
| EFLE | Enhanced-fluidity Liquid Extraction |
| ESW | Equivalent Slab Waveguide |
| IECA | International Erosion Control Association |
| MR-ACPF | Multireference-averaged Coupled Pair Functional |
| TIMS | Technical Information Management System |
| OCEE | Overlap Corrected Electronegativity Equalization |
| ETS | EPCRA 313 Tracking System |