| Acronym | Meaning |
 | ISL | Iceland (ISO 3166 Trigram) |
| FAM | Foreign Affairs Manual |
| TCHD | Truck Cargo Heavy Duty |
| UL | Underwriters Laboratories |
| ECL | Emitter Coupled Logic (electronics) |
| FDC | Federal Detention Center (U.S.) - Fire Direction Centre |
| ICSI | Intracytoplasmic Sperm Injection |
| NORML | National Organization For The Reform Of Marijuana Laws (normal) |
| YU | York University -former Yugoslavia (ISO 3166 Digram |
| EFOA | European Fuel Oxygenates Association |
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