Азо́вское мо́ре (Russian) comes from Russian мо́ре, from Old East Slavic море, from Proto-Slavic moře, from Proto-Balto-Slavic *mári, from Proto-Indo-European móri, from Proto-Indo-European mer- — to die; to disappear; sea, lake, wetland.
Ancestry of “Азо́вское мо́ре”, step by step
Азо́вское мо́ре traces back through two separate lines of ancestry.