wiki писал(а):rōz (also with various pronunciations, such as rūz,rose.rooz rozh, or roj) means "day" in Middle- and Modern Persian. The original meaning of the word, however, was "light". The term is derived from Avestan *rowch-, itself derived from Proto-Indo-European *leuk- (l <-> r and k <-> ch sound changes are common in Indo-European languages), and is related to Sanskrit ruci, Latin lux, Armenian lois and, in fact, English light.