Where does “ostan” come from?

ostan (Old High German) comes from Proto-Germanic austrą, from Proto-Germanic austraz, from Proto-Indo-European *h₂éwsteros — in the direction of dawn, east.

Ancestry of “ostan”, step by step

StepLanguageWordMeaning
1Proto-Germanicaustrąeast; east, eastward
2Proto-Germanicaustrazeast, eastern
3Proto-Indo-European*h₂éwsterosin the direction of dawn, east

Words derived from “ostan”

Every word from Proto-Indo-European *h₂éwsteros →Every word from Proto-Germanic austraz →Every word from Proto-Germanic austrą →