| Acronym | Meaning |
 | ILE | Interlingue Language (ISO 639-2 Code) |
| ESU | Emergency Services Unit |
| USNI | United States Naval Institute |
| G10 | Group Of 10 (G7 + Belgium |
| HR | Croatian Language (ISO 639-1 Code) |
| OASIS | Ontario Agencies Supporting Individuals With Special Needs |
| OPEC | Organization Of Petroleum Exporting Countries |
| AHS | American Housing Survey |
| CTS | Clear-To-Send - Collective Training Standards - Communications Technology Service - Contract Technical Services - Conversation Time Sharing - COSMIC Top Secret |
| OP CIT | Opere Citato (Latin |
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