| Acronym | Meaning |
 | STI | Sexually Transmitted Infection - Subaru Tecnica International |
| XI | Eleven (in Roman Numerals) |
| YU | York University -former Yugoslavia (ISO 3166 Digram |
| PLUTO | Pipe Line Under The Ocean |
| LLC | Limited Liability Company |
| KA | Kiloampere |
| EO | Esperanto Language (ISO 639-1 Code) |
| MAGIC | Major Atmospheric Gamma-ray Imaging Cherenkov (telescope) |
| CSK | Czechoslovakia (ISO 3166 Trigram; Obsolete Since 1993) |
| WCW | World Championship Wrestling |
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