Language codes (3 letters) Abbreviations and Acronyms
- CSCzech
- CUSCushitic (Other)
- CYWelsh
- CYMWelsh Language (ISO 639-2 Code)
- CZCzech
- CZECzech
- CZECCzech
- DAKDakota
- DANDanish Language (ISO 639-2 Code)
- DCGDefinite Clause Grammar
- DEDelaware
- DEDEutsch (German)
- DELDelaware
- DEUDEutsch (German)
- DHKDhaka
- DIKSouthwestern Dinka, a language of Sudan
- DINDinka
- DIVDivehi
- DOIDogri
- DOVDombe
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