| Acronym | Meaning |
| WM | Wehrmacht Marine (German WW2 Navy Vehicle Licence Plate Code) |
| TMT | Thirty Meter Telescope |
| WIYN | Wisconsin Indiana Yale NOAO Telescope Consortium |
| TUN | Tunisia (ISO 3166 Trigram) |
| SNCB | Soci?t? Nationale Des Chemins De Fer Belgique (French For Belgian Railways National Society) |
| QLD | Queensland |
| HMCS | Her Majesty's Canadian Ship Or Her Majesty's Courts Service |
| LUCA | Last Universal Common Ancestor |
| SWAN | System For Wearable Audio Navigation |
| DDL | Digital Data Link |