| Acronym | Meaning |
| FXX | Metropolitan France (ISO 3166 Trigram; Obsolete 1997) |
| NIU | Niue (ISO 3166 Trigram) |
| EMDR | Eye Movement Desensitisation And Reprocessing |
| CACM | Communications Of The ACM |
| SAG | Sango Language (ISO 639-2 Code) |
| EU | Europium |
| MCTIS | Mounted Co-operative Target Identification System |
| TZC | Tetrazolium Chloride |
| LUCA | Last Universal Common Ancestor |
| WH | Wehrmacht Heer (German WW2 Army Vehicle Licence Plate Code) |