| Acronym | Meaning |
 | HI | Hawaii (postal Symbol) |
| WIYN | Wisconsin Indiana Yale NOAO Telescope Consortium |
| USNS | United States Naval Ship |
| RG | Republican Guard |
| ABN | Australian Business Number (a Number Issued By The Australian Government As Registration Of A Business And Used For Taxation Purposes) |
| SOHC | Single-OverHead-Cam Engine |
| SDS | Students For A Democratic Society |
| XP | EXperience Point (role-playing Games) |
| NWT | North-West Territories |
| TWI | The Welding Institute |
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