| Acronym | Meaning |
| FY | West Frisian Language (ISO 639-1 Code) |
| OSS | Ossetic Language (ISO 639-2 Code) |
| CEP | Circular Error Probable |
| TO | Tongan Language (ISO 639-1 Code) |
| CH | Chieftain Tank -China (FIPS 10-4 Country Code) - Switzerland (ISO 3166 Digram; From Latin Confoederatio Helvetica) |
| LARP | Live-Action Role-Playing |
| ITEC | Information Technology Exposition & Conference |
| PA | Punjabi Language (ISO 639-1 Code) |
| ATA | Advanced Technology Attachment (IBM Personal Computer) - Afghan Transitional Authority - Allen Telescope Array -Antarctica (ISO 3166 Trigram) |
| INST | Information Standards And Technology |