Where does “سن” come from?

سن (Persian) comes from French scène, from Middle French scene, from Latin scaena, from Ancient Greek σκηνή, from Proto-Indo-European (s)ḱeh₃ih₂, from Proto-Indo-European (s)ḱeh₃- — darkness, shadow.

سن (Persian): ivy; age; stage

Definitions

ivy; age; stage

Ancestry of “سن”, step by step

سن traces back through two separate lines of ancestry.

via French scène

Step	Language	Word	Meaning
1	French	scène	scene, stage
2	Middle French	scene	stage
3	Latin	scaena	stage; scene; theatre
4	Ancient Greek	σκηνή	tent; stage
5	Proto-Indo-European	(s)ḱeh₃ih₂	shadow, shade
6	Proto-Indo-European	(s)ḱeh₃-	darkness, shadow

via Arabic سِنّ

Step	Language	Word	Meaning
1	Arabic	سِنّ	tooth, age; tooth, tusk, fang

Every word from Proto-Indo-European (s)ḱeh₃- →Every word from Proto-Indo-European (s)ḱeh₃ih₂ →Every word from Ancient Greek σκηνή →