Where does “στῆλαι” come from?

στῆλαι (Ancient Greek) comes from Ancient Greek στήλη, from Proto-Indo-European stl̥-neh₂, from Proto-Indo-European stel- — to put, to place; to locate.

Ancestry of “στῆλαι”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	στήλη	block of stone used as a prop or buttress to a...
2	Proto-Indo-European	stl̥-neh₂	—
3	Proto-Indo-European	stel-	to put, to place; to locate

Every word from Proto-Indo-European stel- →Every word from Proto-Indo-European stl̥-neh₂ →Every word from Ancient Greek στήλη →