| Acronym | Meaning |
 | WAN | Wide Area Network |
| MWOA | Mount Wilson Observatory Association |
| DSG | (i) Direct-Shift Gearbox |
| HD | Henry Draper (star Catalogue) - Hull-Down (armoured Vehicle Target |
| IAW | In Accordance With |
| IWW | Industrial Workers Of The World |
| PV | Picovolt |
| USPS | United States Postal Service |
| ETLA | Extended TLA |
| OJI | Anishinaabe Language (Ojibwa) (ISO 639-2 Code) |
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