Ostalpen (German) comes from German ōst, from Middle High German ōst, from Old High German ōst, from Old Norse austr, from Proto-Germanic austrą, from Proto-Germanic austraz, from Proto-Indo-European *h₂éwsteros — in the direction of dawn, east.
Ostalpen (German): Eastern Alps
Definitions
Eastern Alps
Ancestry of “Ostalpen”, step by step
Ostalpen traces back through two separate lines of ancestry.