| Acronym | Meaning |
| DJ | Disc Jockey - Dinner Jacket -Djibouti (ISO 3166 Digram; FIPS 10-4 Country Code) |
| SEDRIS | Synthetic Environment Data Representation And Interchange Specification |
| TTFN | Ta Ta For Now |
| WWIII | World War III |
| HK | Hong Kong (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| LJ | La Jolla - Larry Johnson - LaserJet - Library Journal - Linux Journal - LiveJournal - Ljubljana - Lord Justice Of Appeal -Sierra National Airlines (IATA Code) |
| SETI | Search For ExtraTerrestrial Intelligence |
| XIII | Thirteen (in Roman Numerals) |
| PCAS | Planet-Crossing Asteroid Survey |
| BCE | Banque Centrale Europ?enne - Battlefield Co-ordination Element - Before Common Era - British Columbia Electric Railway |