Where does “Noor” come from?

Noor comes from Arabic nūr, meaning "light."

Ancestry of “Noor”, step by step

Step	Language	Word	Meaning
1	Arabic	نُور	light, brightess; ray of light, light beam;...
2	Classical Persian	جَان	—
3	Middle Persian	𐫃𐫏𐫀𐫗	—
4	Proto-Iranian	*wyaHnáH	—
5	Proto-Indo-Iranian	wyaHnás	—
6	Proto-Indo-European	h₂enh₁‑	—