| Acronym | Meaning |
| R2I | Resistance To Interrogation |
| IHH | Idiopathic Hypogonadotropic Hypogonadism |
| SU | Soviet Union (ISO 3166 Digram; Obsolete 1992) - Sudan (FIPS 10-4 Country Code) |
| EPLRS | Enhanced Position Location Reporting System (ee-plarz) |
| MARBEF | Marine Biodiversity And Ecosystem Functioning |
| UAE | United Arab Emirates |
| HESV | Heavy Engineering Support Vehicle |
| LABVIEW | Laboratory Virtual Instrumentation Engineering Workbench |
| SSTO | Single-Stage To Orbit |
| CE | Many |