köken: Inherited from Proto-Slavic *mirъ (“peace; world”), from Proto-Balto-Slavic *meiˀrás (“peace”), from Proto-Indo-European *mey(H)-ró-s. The dual meaning of "peace" and "world" is unique to Slavic. The pre-1918 orthography had an orthographical distinction of the two identically pronounced words to avoid confusion.