| Acronym | Meaning |
 | ISA | Individual Savings Account - Industry Standard Architecture - Instruction Set Architecture - International Seabed Authority |
| NCB | National Codification Bureau |
| UO | Urban Operations |
| VN | Vietnam (ISO 3166 Digram) |
| ARM | Anti-Radiation Missile -Armenia (ISO 3166 Trigram) |
| OB | Obedience - Obligation - Obligatory - Obsolete - Obstetrics -Ocean Beach (California) - Off Break (cricket) - Old Bryanstonian - Order Of Battle - Outlet Box (electrical) -Overbought (stock Market) -Oversight Board |
| XVIII | Eighteen (in Roman Numerals) |
| ST | Sotho Language (ISO 639-1 Code) |
| SQL | Structured Query Language (seek-well) |
| ITALY | I'll Truly Always Love You |
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