| Acronym | Meaning |
| CS | Combat Support - Computer Scientist -Costa Rica (FIPS 10-4 Country Code) - Serbia And Montenegro (ISO 3166 Digram) |
| ATN | Dronning Maud Land (ISO 3166 Trigram; Merged With AQ In 1983) |
| AND | Andorra (ISO 3166 Trigram) |
| PTUI | Plain-Text User Interface (pa-too-ey) (cf CLI) |
| FSC | Federal Supply Classification -Forest Stewardship Council (ecological Pressure Group) |
| KL | Kalaallisut Language (ISO 639-1 Code) |
| DIC | Design Island Centre (computing Usually Used In A Teaching Situation) |
| LRC | Local RTI Component - Logistics Readiness Center |
| ZA | South Africa (ISO 3166 Digram) - Zambia (FIPS 10-4 Country Code) - Zettaampere |
| OPV | Offshore Patrol Vessel |