Where does “stadiwm” come from?

stadiwm (Welsh) comes from English stadium, from Latin Stadium, from Ancient Greek στάδιον, from Ancient Greek στάδιος, from Proto-Indo-European *steh₂-.

stadiwm (Welsh): stadium

Definitions

stadium

Ancestry of “stadiwm”, step by step

Step	Language	Word	Meaning
1	English	stadium	A venue where sporting events are held; An...
2	Latin	Stadium	stade (distance of 125 paces)
3	Ancient Greek	στάδιον	A 600-foot track for footraces and the...
4	Ancient Greek	στάδιος	standing fast and firm; firm, fixed, immobile;...
5	Proto-Indo-European	*steh₂-	—

Every word from Proto-Indo-European *steh₂- →Every word from Ancient Greek στάδιος →Every word from Ancient Greek στάδιον →