Where does “HRV” come from?

HRV (Translingual) comes from Serbo-Croatian Hrvatska, from Serbo-Croatian Hr̀vāt, from Proto-Slavic xorvatъ — Croat.

Ancestry of “HRV”, step by step

StepLanguageWordMeaning
1Serbo-CroatianHrvatskaCroatia
2Serbo-CroatianHr̀vāta Croat; Croat
3Proto-SlavicxorvatъCroat
Every word from Proto-Slavic xorvatъ →Every word from Serbo-Croatian Hr̀vāt →Every word from Serbo-Croatian Hrvatska →