| Acronym | Meaning |
| CUPW | Canadian Union Of Postal Workers |
| OA | Operational Analysis |
| AAD | Analogue-Analogue-Digital (CD Quality) - Australian Antarctic Division |
| NO | Nobelium |
| MT | Malta (FIPS 10-4 Country Code; ISO 3166 Digram) - Megatesla - Montana (postal Symbol) -Motor Transport (military) |
| VANOS | Variable Nockenwelle System |
| ATB | Active Time Battle -British Antarctic Territory (ISO 3166 Trigram; Merged With AQ In 1979) |
| AUS | Australia (ISO 3166 Trigram) |
| TS | Terasiemens - Thunderstorm (METAR Code) - Tunisia (FIPS 10-4 Country Code) -TinySex - Transsexual |
| ECTHR | European Court Of Human Rights |